Ou Sen

Characteristics	Story	Gallery

Ou Sen
Manga S3 S2
Chinese	Wang Jian
Kanji	王翦
Romaji	Ōsen
Epithet	The Most Dangerous Man in Qin Third Great
Biographical Information Status Alive Marital Status Widowed Age 50s Gender Male Eyes Red Hair Black Skin Pale Brown Complexion Distinction Intense Eyes Asura-like Military Helmet & Armor Relatives Shu Kei † (Wife) Ou Hon (Son) Sai Ka (Daughter-in-law) Ou Ri (Grandchild) Ou Ki† (Cousin) State Qin Residence Ou Family's lands, Qin Location With the Ou Sen Army, Zhao
Professional Information Classification Commander-in-Chief Military Commander Cavalry Occupation Soldier Noble Head of the Ou Family's main branch Affiliates Qin Military Ou Sen Army Ou Family Mou Gou Army (Defunct) Military Rank Great General
Media Japanese VA Horiuchi Kenyuu English VA Chris Guerrero
Appearance Manga Debut Chapter 201 Anime Debut Episode 55 Game Debut Kingdom: Seven Flags

“	As the head of the same family as the famous Ou Ki but of the main family. It is rumored that he is equally as talented as Ou Ki himself. However, due to his dangerous ambition he never received King Sho's favor. It is said that he desires to become a king himself.	”
— Shou Bun Kun on Ou Sen's ambition.

Ou Sen is a Great General of the Qin Military and a former member of the Six Great Generals as its third member before stepping down following his defeat at the Battle of Hango.

Aside from his career in the military, Ou Sen is the current head of the noble, prestigious Ou Family's main family and was revealed to be the cousin of the late Ou Ki, the powerful Great General from the branch family, and the husband of his late wife, Shu Kei and the father of Ou Hon, their only son and General of the Qin Military as well as the father-in-law of Sai Ka, his son's wife and grandfather of their child, Ou Ri.

Appearance

Ou Sen is a tall man with a warrior’s build and long jet-black hair. He is never seen without a helmet or mask, leaving the details of his facial features unknown. Only the lower third of his face is visible: a strong jaw, a black moustache, and a long goatee. His eyes appear dark, narrow, and observant, never betraying a hint of emotion.

Both his helmet and armor are uniquely black and adorned with intimidating designs, featuring lifelike faces resembling an asura or deva on the visor, back, and armor. A dragon’s claw grips the top of his helm. He wears a white cape (red in the anime), fastened with a cape clip that mirrors the design of his armor and helmet. This elaborate ornamentation reflects the wealth of the Ou family’s head and, combined with his personality, contributes to his commanding and intense presence.

Personality

“	Apologies Ren Pa. I have no interest in anything other than "battles that I can definitely win".	”
—To Ren Pa during the Battle of Sanyou. (Chapter 222, Page 9)

Ou Hon's on his father's cold and analytic mentality.

Ou Sen is an enigmatic figure, whose inner thoughts and emotions remain largely unknown and difficult to decipher.

In his interactions with both peers and subordinates, he appears consistently stoic, detached, and matter-of-fact. Ou Hon describes him as a man who has discarded all unnecessary emotions. He leads with very few words, never raises his voice, and rarely explains the reasoning behind his orders. By his own admission, he can be rather tactless at times.

It is rumored that Ou Sen harbors a secret ambition to establish a kingdom of his own. This is directly confirmed during his confrontation with Ri Boku, when he invites the opposing general to join forces in pursuit of this goal—right in the midst of a decisive battle. Although his actions have never directly conflicted with Qin’s interests, he appears to regard his current military role as merely a stepping stone toward his greater ambition. His closest subordinate, A Kou, was aware of this aspiration and joined him under that very promise. He is well-read and holds strong opinions on Chinese history, remarking to Ri Boku how easily kingdoms fell when they were "ruled by imbeciles" born into royalty.

His relationship with his son, Ou Hon, is extremely distant, leading many to believe he harbors resentment toward him—fueled by rumors that his late wife bore Ou Hon as another man’s child. However, this interpretation remains uncertain, as Ou Sen’s true thoughts and feelings are unknown. Despite their strained relationship, Ou Sen once corrected Ou Hon’s spear technique during his childhood and later scolded him for recklessly attempting to rescue him during Ri Boku’s flanking maneuver at the Battle of Shukai Plains.

Ou Sen may possess a subtle sense of benevolence. A notable aspect of his character is his tendency to capture enemy generals and commanders alive, often attempting to recruit them as subordinates. Unlike some of his peers, he shows no signs of bloodlust or a taste for needless cruelty. During the Gyou Campaign, he strictly forbade his army and allies from harming the citizens of captured cities, enforcing this order with the threat of immediate execution. Whether this was a calculated strategic move or a reflection of genuine compassion remains uncertain. Furthermore, Ou Sen chose not to punish Sou'Ou after he abandoned formation to rescue his longtime lover, Shi Ryou.

Like the late Haku Ki of the Six Great Generals, Ou Sen is an exceptionally cautious commander, known for meticulously crafting advantages and maneuvering opponents into unfavorable positions. He shows no hesitation in sacrificing soldiers to achieve his objectives and only engages in battles he believes he can win. Ou Sen has no issue acknowledging Ri Boku’s military prowess as equal to his own. He even refuted the notion that his victory at Gyou was due to superior strategy, instead attributing it to the unexpected combat capabilities of the Hi Shin Unit.

Opponents such as Ren Pa describe him as a man who prioritizes his own survival over the lives of his subordinates or even the outcome of the battle. However, this evaluation is somewhat contradicted by his behavior during the Battle of Hango, where Ou Sen showed little concern when outmaneuvered and nearly killed, refusing to retreat until the situation had become entirely hopeless. Following this rare defeat, Ou Sen claimed to know of a weakness in Ri Boku that would allow him to defeat him at any time—yet stated that he chose not to exploit it, as he intends to recruit him instead. Whether this remark reflects overconfidence in the wake of his loss or is a genuine insight remains unclear.

History

Ou Sen was born in the Ou Family's main branch, however, his entire early life is a complete mystery. Aside from that, he has served in the Qin Military for decades since even the time of the War God's era and showed immense talent in warfare as Ko Shou, the Strategist of the Six Great Generals, acknowledged his abilities. His talents rivaled that of his cousin, Ou Ki.

However, he never once received King Shou's favor due to his dangerous ambition in wanting to be a "king." Mou Ten calls him the "most dangerous" person in Qin because he aspires to become a king. During this period, Ou Sen met an enemy soldier by the name of A Kou on the battlefield. After defeating his army, Ou Sen offered a Kou a position to serve him. A Kou, skeptical, asks Ou Sen if he is sane in wanting to build a kingdom in this era of contest warfare. Ou Sen answers that he is sane but apologizes for his tactless behavior towards his subordinate. While A Kou retorts that he hasn't agreed to anything yet, Ou Sen tells him to come with him. And that the road ahead is going to be a long one.

Story

Sanyou Campaign Arc

Ou Sen is first seen as his army conquers the Wei city of Sanbi with only his first wave of troops. Before the Battle of Sanyou started, Ou Sen bested Ren Pa by arriving first on the Rui Plains and taking the high ground of Mount Man for himself. From a hill, he observed his son strike with the vanguard unit before leaving with his troops. He was subsequently pitted against the Wei left army led by general Kyou En of Ren Pa's Four Heavenly Kings.

As his army fought that of Kyou En, he pulled back his main army to the rear, then arrived to reinforce commander Heki, by giving him command of 5,000 Qin troops and tasked him with engaging General Kyou En. As he leaves, one of his lieutenants asks if that was a wise decision, to which Ou Sen states that Heki will make excellent bait. He arrives with his main army at the Wei Di to catch Kyou En off-guard, killing the Wei troops stationed on the cliffs and re-capturing the position. Mentioning that defeated commanders can only expect death, he offers to spare both Kyou En and his troops if he swears his loyalty to him.

He adds that the Wei general will become one of his close retainers and given lands, stating that his "kingdom" needs men skilled at warfare. When Kyou En rejects the offer by shooting at him, Ou Sen orders him taken alive and states that he manipulated the battles to make it seem as though the Wei were winning.

He is shocked when his troops are caught off-guard by the appearance of great general Ren Pa and orders the officers to reform his troops, telling them to send word to Heki as well. He retreats with his army out of the gorge, stating that he only fights battles where victory is certain. As Ren Pa and Kyou En chase after his army, they enter a forest in which they discover a soil fortress that Ou Sen built, reminding them of Haku Ki who used to do the same.

At the end of the Battle of Sanyou, when Ren Pa decides the Wei army should retreat, he says one of the reasons for their loss was the untouched army of Ou Sen who was waiting for the right time to strike.

Coalition Invasion Arc

Ou Sen had the role of the shield in the war against the Coalition Army, as he was assigned the responsible for guarding the mountains that lead to the capital city of Qin, Kanyou.

In the Battle of Kankoku Pass, he was matched up against the Yan Army led by Great General Ordo, consisting of many mountain tribes who excelled in territorial combat and could easily get to Kanyou if they were to defeat Ou Sen, which made his role exceedingly important.

The first day passed with little to no battle between the two armies, as the Yan army did not attack the Qin army that was stationed on the mountain.

On the second day, the Yan army began attacking. Ordo's troops slowly moved into the giant fortress as they specialized in mountain combat. As they were beginning to unleash stronger attacks, an envoy from the Coalition Army HQ arrived and informed them that they needed to preserve their strength and utilize attrition warfare. Due to this, the Ordo army backs out of the mountains.

At the beginning of the 15th day, when a messenger informs the officials in the court of the situation on the battlefields, he says that Qin's messengers have completely lost contact with Ou Sen and his army. Shou Bun Kun says that it is possible Ou Sen has simply run away, as his ambition is to become king and has no interest in losing his life protecting Qin.

The true reason for Ou Sen's retreat was due to Ordo's troops striking the center of the Ou Sen army, which was responsible for sending reinforcements to the other forts. After they lose their center fort, the Ou Sen army retreats northwest. Making use of this, Ordo and his army begin pushing into the mountains and reach the mountain that leads them behind the walls of Kankoku Pass. The reason Ordo was able to navigate so well in the mountains was that he was a king of 50 mountain tribes and had superb mountain reading skills.

As he and his army reach the cliff, they begin climbing, however not knowing that Ou Sen and his army are right behind them. Ou Sen's army releases a barrage of arrows that take Ordo's army by surprise. Ordo rethinks how it's possible for Ou Sen to catch him off guard and realizes that his army never moved northwest but waited to ambush them.

Ou Sen tells one of his lieutenants, Mou Chi to rapidly fire arrows not worrying about ammunition because they have a good chance of wiping out a big part of Ordo's army, At the same time, he sends Mou Ryuu to capture Ordo and bring him alive. Mou Ryuu and his unit quickly set out and reach Ordo, but he is instantly killed by the Yan Great General. Qin reinforcements come and manage to hit Ordo with some arrows, and they force him to retreat and escape Ou Sen, but his 8000 mountain tribe soldiers that were the elite core of his army are slaughtered with that, Ou Sen retreats and disappears back into the mountains.

Conspiracy in the Court Arc

After the end of the Coalition War, Ou Sen is ordered to attack the gigantic Wei stronghold of Keito. He easily conquered the city and absorbed captured Wei soldiers into his fold as they swear their allegiance to him.

Fire Dragons of Wei Arc

Ou Sen was stationed in the Kakuyou region of Qin. He waited for orders to assist Tou Army, but it never happened, which surprised his commanders.

Western Zhao Invasion Arc

Ou Sen left announced as the Commander-in-Chief for the invasion of Zhao.

Ou Sen was selected as the Commander-in-Chief of the western Zhao attack army. With generals Kan Ki and Yo TanWa as commanders of the 1st and the 2nd army. On the march to Kinan, he orders his men to stop, because he realizes that it is soon going to rain. with this, he saved their energy for their march against time in order to attack Gyou before the Zhao could rally their defenses.

At the commander meeting in Kinan, he informs the officers that they will be set out this night, and if one squad should fall behind, the officers responsible for this squad would be executed.

At Retsubi, after Yo Tan Wa and Shin captured Retsubi, he smelled something wrong at the timing of the capture of the city and disappeared mysteriously.

It was revealed that Ou Sen realized that Retsubi was, in fact, a trap devised by Ri Boku. The city was intentionally designed to be weak and easy to take for its conquerors. Because of the necessity to use Retsubi as a steady supply line for their siege of Gyou, this essentially ruined Shou Hei Kun's overall strategy. Seeing these developments, Ou Sen departs Retsubi with A Kou and a small unit of bodyguards to scout Gyou. After taking a look at the city, he realized that it was perfectly fortified. With no other options, Ou Sen immediately started devising a new strategy on the spot as A Kou and his bodyguard protected him from Zhao Patrols squads. He eventually returned to Retsubi and immediately ordered all troops to push further into inner Zhao, declaring that the war would become a battle of wits between himself and Ri Boku.

His strategy is composed of four stages: first, completely abandon Retsubi and attack mid-size cities and towns to secure extra food for the invasion army. Secondly, use Yo Tan Wa Army as a "shield" to prevent Kou Son Ryuu and his army in interfering their march, then use their armies, like the Hi Shin Unit, Gaku Ka Unit, Gyoku Hou Unit, Kan Ki Army, and other forces to attack and siege the nearby cities while also evicting all the citizens and forcing them in the direction of Gyou. Finally, when all his plans are accomplished, he will siege Gyou when the time's right. Ri Boku was struck with utter horror when he learned the reason behind all the refugees flooding Gyou, and he curses Ou Sen underneath his breath.

With all Qin forces reaching Gyou, Ou Sen started to explain the full scope of his plan by stating that there are only two Zhao armies capable of liberating the Zhao city, which are Atsuyo and Ryouyou armies. Ou Sen later stated that the army that Yo Tan Wa was facing was the Ryouyou army. He then splits his army further to face the Atsuyo Army while starving out Gyou and sending the Heki Army of 8000 soldiers plus 2000 soldiers from Kan Ki Army reserves help to Yo Tan Wa. Also, Ou Sen left the Kan Ki Army of 60000 soldiers to starve and siege Gyou: surrounding it from getting any help and the Ou Sen Army of 70000 soldiers in addition to 8000 of the Hi Shin Unit, 5000 of the Gyoku Hou Unit, and 5000 of the Gaku Ka Unit.

During the Battle at Shukai Plains, he positions Mou Ten and the 5000 Gaku Ka Unit on the left while putting Ma Kou and the Hi Shin Unit in the center and A Kou and the Gyoku Hou Unit on the right. Later, during the battle, he tasked Shin with 800 men to kill Ki Sui.

Later, he sent Shin and the Hi Shin Unit, nothing more. Days later, he simply ignores requests of reinforcements and pleas from the right to replace an incapacitated A Kou with his son.

He commanded his soldiers to move forward after the 13th day. Then he was calm despite reports of Ri Shin being promoted to Commander of the right-wing without his permission.

On the 15th day, without waiting for the left to push through, he moved his units, engaging Ri Boku Army's center. He never used any tactics against Ri Boku but tasked his soldiers to push through.

Zhao Crisis Arc

Ou Sen is promoted to the rank of Great General for his conquest of Gyou and victory against the Zhao forces led by Ri Boku after the Battle at Shukai Plains.

He remains in command of the Qin forces as they continue the invasion of Zhao, spreading out his army’s forces as he prepares them to punch through Zhao Great General Ko Chou ’s defensive lines.

Ou Sen then summons generals - A Kou, Sou’Ou, Den Ri Mi, Ou Hon, Mou Ten, and the casually late Ri Shin to his HQ for a strategy meeting. But just before he could explain his upcoming strategy, they received an urgent priority report from a messenger that received information from their spies within the capital of Kantan.

He orders the messenger to speak, and he tells them the news of the Zhao King’s sudden death and the added news of the late king’s Prince Ka potentially in line with the Zhao throne. Ou Sen states that Zhao itself will be reborn anew through these developments. While in discussion, the armies of Kantan begin marching towards their position.

Seeing this, Ou Sen proclaims that they’ll need to start again and orders the commanders back to their posts as they fall back to the second defensive line.

Battle of Eikyuu Arc

At the start of the new year, Ou Sen is promoted to the third member of the reborn Six Great Generals as the Qin king, Ei Sei, brings back the system. He then returned to the Zhao frontlines together with Kan Ki and Yo Tan Wa. During the war, the Gaku Ka Army was posted with the Ou Sen Army.

When the Gyoku Hou is sent by Kan Ki on a suicide mission, Mou Ten goes to Ou Sen's HQ and begs the great general to save his son, but Ou Sen refuses, claiming that he had a deal with Kan Ki to leave Gyoku Hou to him.

While observing the battle between Kan Ki and Ko Chou, Ou Sen deduces Kan Ki's strategy as he calls his former bandit colleague insane for risking a strategy not even he would consider. He then goes on to tell the story of Sun Bin and the Battle of Baryou to his deputies.

Zhao's Retaliation Arc

At the beginning of the year 233 B.C., the Ou Sen Army besieged the Zhao city Bujou south of Kantan. While his army was still sieging, he led a scouting mission on the Zhao territory behind the frontline cities. On that mission, he discovered the heavily fortified 125 km long wall securing the capital and surrounding areas to the Qin border in the south. After discovering the wall, he informed Kanyou and suggested changing the objective of the current invasion from Kantan to the city of Gian to block the escape of the Zhao royal family from the capital. After the fall of Bujou, he stayed in the city for two months to let reinforcements for his army arrive.

Ou Sen and his army leave the city after turning over command of the city to the Yo Tan Wa Army and combining their strength with the Kan Ki Army to attack Atsuyo. He decided to siege Atsuyo with his army under the command of Den Ri Mi because he knew that they were better suited for this than the other armies participating in the invasion. The remnants of the Ko Chou Army under Ko Haku Kou and Ryuu Fu made during the siege a suicidal sortie to kill the general in charge of the siege.

They were intercepted by Ou Sen and his guard after almost reaching Den Ri Mi. The city fell shortly after, but their fierce defense surprised him as he didn't predict the casualties of his army being thrice as high as he initially anticipated. He stayed in Atsuyo to reinforce his army and later catch up to the Kan Ki Army, which was left in the direction of Gian.

During his stay at Atsuyo, Ou Sen was informed about the defeat of the northern Army at the Battle at Roumou Cliff. He denies Sou'Ou's proposal for parts of his army to catch up to and reinforce Kan Ki and his Army, which was now severely weaker than expected until he had more information. He later denied Sou'Ou's proposal again after he discovered that Kan Ki could not be saved and was trapped in Zhao territory, and sending support would only get them killed. After the confirmation of Kan Ki's death, he allowed Sou'Ou to collect information by testing the defenses of Zhao.

Hango Campaign Arc

Ou Sen is put in charge of the campaign to conquer Hango as the Supreme Commander. The information about Hango being the real target was confident, however Ri Boku was able to predict it and both armies faced each other in a large battle. Ou Sen placed his main army in the center against Seika.

After Ri Shin is baited into Ri Boku's trap Ou Sen decides to send Den Ri Mi Army as a killing blade to take out Seika generals. However, Shi Ba Shou is able to disrupt this move by personally attacking their forces and after that outmaneuvers Qin armies in order to strike Ou Sen's core.

Despite being pincered by Kan Ou and confronted with Ou Sen's formations the giant general and reaches Ou Sen's HQ. Ou Sen's vassals also arrived in this place, however they are unable to save the situation. A Kou and Den Ri Mi sacrifice themselves to allow Ou Sen's safe retreat. Ou Sen is shocked by their death; however, he pulls back and with the assistance of A Ka Kin who was sent by Ou Hon is able to escape Zhao's ambush. A Ka Kin tries to cheer Ou Sen up, but Ou Sen answers that he's silent only because he's already thinking about a path to restoration. The battle ends with Ou Sen Army being annihilated and remaining Qin forces retreating.

Three Pillars Arc

Ou Sen and his remaining soldiers return to Atsuyo in order to rebuild their forces. Sou'Ou informs him about his meeting with Kan Saro, but Ou Sen decides to overlook this and reinstates Sou'Ou to his previous position.

Ou Sen meets with his remaining vassals in his room and is informed about Three Pillars reforms. Shin Shou expresses his opinion that in the next battle with Ri Boku eight out of ten times it will be Ou Sen's victory. However, Ou Sen corrects him that it will be ten out of ten times. Sou'Ou is skeptical about this confidence, but Ou Sen says he knows about Ri Boku's weakness and if he exploits it then victory will be trivial.

Sou'Ou is not convinced as he asks why he didn't used it in Hango, but Ou Sen answers that he thought he can win without exploiting that weakness. His words only anger Sou'Ou who points out that because of that A Kou and Den Ri Mi died. Ou Sen doesn't argue with him and decides that for now they will mourn their fallen comrades while watching the affairs of the kingdoms.

Abilities

“	A strength that stems from having discarded any needless emotions. Regardless of what happens, a mind capable of cold calculation and meticulous construction of the optimal strategy that will yield the most efficient results. That is the man known as Ou Sen.	”
—Ou Hon to Kan Jou during Battle at Shukai Plains. (Chapter 535, Page 12)

• Guidebook 3
• Guidebook 2
• Guidebook 1
• Vol. 20

STATS
Strength	93
Leadership	95
Intelligence	99
Experience	A
Dark ambition: 100

STATS
Strength	93
Leadership	94
Intelligence	97
Experience	A
Dark ambition: 100

STATS
Strength	93
Leadership	93
Intelligence	97
Experience	B
Ambition	Secretly 100

STATS
Strength	unknown
Leadership	unknown
Intelligence	unknown
Ambition	Secretly 100

Ou Sen has been stated to give off immense pressure with his skills considered to be on the level of the Six Great Generals of Qin and later becoming a member of the new generation. His talent was such vast that it was even compared to the likes of Ou Ki, Haku Ki and Ri Boku. During the Sanyou Campaign, he effectively conquered 8 cities over 2 months, besting both Mou Gou's conquest of 3 cities and Kan Ki's of 5 cities by using a lightning-fast series of offensives.

Physical Abilities

While Ou Sen hasn't been seen fighting actively due to his cautious nature, his high strength value indicates him being a capable combatant with great mastery in wielding a glaive. This is later seen when he easily slew soldiers from Ba Nan Ji Army with his glaive and drove off soldiers from the Ko Chou Army despite their high morale.

Leadership

Ou Sen exhibits a formidable and commanding style of leadership, despite the opinions of Heki, Ren Pa, and his son Ou Hon, who believe he views his soldiers as mere expendable pieces. However, his generals and commanders display unwavering loyalty, willingly enduring grueling hardships under his command.

During the siege of Gyou, this loyalty was further exemplified by the agents who infiltrated the city to destroy its food supplies. Fully aware that their mission was suicidal, they carried it out in Ou Sen’s name, demonstrating his ability to inspire dedication and earn the trust of highly capable individuals.

Tactical Abilities

Master Strategist: Ou Sen's talent as a tactician is so great that it was even acknowledged by the late Ko Shou who stated that when it comes to Ou Sen's strategical acuity alone, he could be considered equal to the Six Great Generals even many years before the beginning of the series. He is recognized to be the best strategist in Qin by other talented commanders like Ri Boku and has a great level of insight and ability to predict his opponent's moves. Appearing defensive and cautious, he typically utilizes traps to take down his enemies in the form of a sudden surgical strike. Due to Ou Sen's cautious nature, his tactics shared many similarities to Great General Haku Ki's warfare.

He possesses a staggering insight into battle and the tactics utilized by his opponents, often turning their strength against them. Kyou En's offense was blocked by allowing him to advance to the Wei Dei after this failed due to Ren Pa's intervention the strategic positioning of his core army in the fort created a safeguard and certain countermeasure to Ren Pa being able to regroup his forces after assaulting Mou Gou's base camp.

Ou Sen allowed his forts to be taken at the Battle of Kankoku Pass in turn to surprise attack Ordo and wipe out the core elite of his army. Knowing that Ordo would not counterattack Ou Sen was also able to successfully counter Ka Rin Army's elite forces striking at the back of Kankoku Pass.

During the Gyou Campaign, he created a "Locust" plan that used Zhao's citizens against them and overpopulated the city during the siege. In addition, he sneaked his spies into the Gyou walls that burned the supplies warehouses to make the civilians revolt against the defenders and open the gates from the inside. The use of this strategy surprised even Ri Boku.

Military Formations: Ou Sen is capable of performing military formations with ease. He was able to create an advanced defensive formation that withstand assaults from three different armies. Other expert strategists like his son, Ou Hon and Zhao General Chou Ga Ryuu couldn't even grasp its mechanism. The only person who was able to decipher was Ri Boku due to his great knowledge of field tactics and observations. He is also shown performing a pincer-like manouver against the charge of powerful martial-based generals.

Origin Tactics: Ou Sen has demonstrated the ability to find the "origin" of the workings of armies on the battlefield. When faced with Earl Rai's "Origin Tactics" he was able to comprehend them after some probing and successfully stalemated it with a direct advance. Once the battlefield became chaotic and unpredictable, he then directed his units in such matters to form a Great Crane Formation with its "Red" version and gain an advantage against Ri Boku.

Ou Sen's natural fortress.

Terrain Manipulation: Ou Sen has demonstrated impressive terrain manipulation since he was able to direct Heki to use a Wei Di against Kyou En and had captured the important high terrain before the battle.

Perhaps a more impressive example is against the Yan army where he was able to use the mountains to such an extent that the opposing mountain tribesmen were amazed that he was a plain dweller and yet he was able to manipulate Ordo, a renowned mountain battle specialist, into a deadly trap.

In both the Wei Campaign and Battle of Kankoku Pass, he also demonstrated a rare talent for building strong natural fortresses with a penchant for using the high ground. Ren Pa commented that Ou Sen's fort does not possess even a single opening, which makes it extremely hard to conquer.

Weaknesses

According to Sou'Ou, while Ou Sen excels in complex battlefield scenarios involving numerous variables, his weakness lies in straightforward, brute-force engagements. This flaw was exploited by Ri Boku during the Battle of Hango. By isolating the Hi Shin Unit and Gyoku Hou Army—forces capable of creating the necessary complexity—and forcing a direct confrontation with the powerful Shi Ba Shou Army, Ri Boku was nearly able to annihilate Ou Sen’s forces.

Quotes

“	Going up against this man always feel like you're under amazing pressure ... the reason for that is ... every single time this General looks at us, it's as if he doesn't even think of us as his own allies.	”
—Heki's thoughts on Ou sen (Chapter 218, Page 20)

“	It doesn't matter who dies, to that man it will be nothing more than the loss of a single pawn. If he has lost the left wing's commander, it's simply a matter of replacing it with another pawn. Which is why the center army has so many officers gathered alongside it.	”
—Ou Hon to Kan Jou (Chapter 535, Page 12)

“	You want me to tell you the one thing that I do know, Ma Ron? I've never given a rat's ass about it, but me an' Ou Sen do go pretty far back - ever since we both served as old Hakurou's deputies. And as far as I know ... that bastard ... never picks a fight that he can't win.	”
—Kan Ki to Ma Ron during the invasion of Western Zhao. (Chapter 513, Page 11-12)

“	How trite. The years of a kingdom's history have never been something to save a state from annihilation. All it takes is for a state to be helmed by a pack of imbeciles. That alone is more than enough to bring it to its knees.	”
—Ou Sen to Ri Boku (Chapter 607, Page 20)

Etymology

• Ou or Wang means "king, ruler, sovereign, monarch" (王)

Trivia

• Wikipedia lists Wang Jian (Ou Sen), alongside Lian Po (Ren Pa), Li Mu (Ri Boku), and Bai Qi (Haku Ki), as the four greatest generals of the Warring States period.
• While unconfirmed, in Chapter 163 of Vol.16, a soldier with a distinguished mask and helmet is seen in the background. This soldier has been theorized of being Ou Sen by fans and readers.
• Besides Tou, Ou Sen is one of the oldest members of the Six Great Generals' new generation.
• Ou Sen is the second Qin Great General revealed to be a father, besides Mou Bu and a grandfather aside from his late benefactor, Mou Gou.

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Characters

Chu Royal Family Kou Retsu † Shun Shin Kun Prime Minister Shun Shin Kun † • Ri En • Ka Rin • Officials Ri En • Ko Reki • Hoku Ryou • Bam Yu • Hou Chiku • City Lords TBA Citizens Haku Sui Military Great Generals Ka Rin • Kou En • Kan Mei † • Generals Kou Yoku • Haku Rei • Bei Man • Gou Ma Sho • Rin Bu Kun † Strategists Jin Ou • Bei Man • Gou Ma Sho • Commanders Bam Yu • Ka En • Gou Toku • Shin Ka • Kai Hou • Goku • Ro Kin • Koku Shi • Kyou Bou Soldiers TBA Affiliates Ren Pa • Ren Pa Army (Kai Shi Bou • Kyou En •) • Man'U • Sen To'Un • Gen'U • Ju Ko'Ou • Man'U Army (Sen To'Un Army • Gen'U Army) Han Royal Family Ou Ou ‡ • Ou An • Nei Prime Minister Chou • Officials Kan Pishi † • Jou Sei • Ka Jyuu • Taiza • Ryuu Kaku • Sai En • Kan Bu • Rohaku Kyou • City Lords Ryuu'an Citizens On Kei • Sai Hi Military Great Generals Sei Kai † • Raku'A Kan Generals Haku’ou Koku • Chou In • Bi Kei • Hai Don • Tei Ko Commanders Yoko Yoko • Ba Kan † • Na Kon † • Ki'u Strategists TBA Affiliates Chu • Chu Military (Ka Rin) Qi Royal Family Ou Ken Prime Minister TBA Officials Kou Shou City Lords TBA Citizens TBA Military Great Generals Gan Mo • Den Kaku • Generals Kan Shu • Commanders TBA Soldiers TBA Affiliates Sai Taku • Ei Sei • Qin Qin Royal Family Duke Toku † • Boku Kou † • Duke Kai Kou † • King Shou † • Anko Kukun † • Sou Jou † • Queen Mother • Ei Sei • Rei • Fuso • Sei Kyou • Rui • Kaku Kei † Chancellors Shou Bun Kun • Shou Hei Kun • Ryo Fui • Ketsu Shi † • Prime Minister N/A Officials Sai Taku • Ri Shi • Kai Oku • Shi Shi • Tei Koku • Chou Man • Ryuu Kai • Kou Kin • Sa Ji • Fuu Kyou Royal Harem Kou • You • Fuso's Mother • Bi Kyuu • A Min • Noble Families Three Great Families of Qin • Ou Family • Mou Family • City Lords Duke Hyou • Ou Ki • Tou • Rui's Great Grandmother • Ho Kaku • Koku Gou • Dan Shi • Citizens Ri Hyou † • Tou Bi • Yuu Ri • San Roku • Sen (Jouto Village) • Gan (Jouto Village) • Rin (Jouto Village) • Ri Ten Family (Village Chief (Jouto) • Yuu) • Kou's Mother • Sen (Fuuri) • Taku Kei's Daughter • Taku Kei's Son • Ryuu Sen's Wife • Ryuu Sen's Children • Shou Bun Kun's Family • Kan Shuu • Gou In • Gaku Kou • Sai Kyou • Kou Shun • Gan Chou • Kon • Han • Io • Shio † • Saki Clan • Ri Shi's wife Military Six Great Generals Mou Bu • Tou • Yo Tan Wa • Kan Ki † • Haku Ki † • Ko Shou † • Kyou † • Ou Ki † • Ou Kotsu † • Shi Ba Saku † • Great Generals Ou Sen • Duke Hyou † • Mou Gou † • Chou Tou † • Generals Ri Shin • Kyou Kai • Ou Hon • Mou Ten • Roku O Mi • Ryuu Koku • Kan Ou • A Kou † • Ma Kou † • Kan Jou • A Ka Kin • Riku Sen • Ai Sen • Den Ri Mi † • Sou'Ou • Heki • Shou Kaku • Kou Ryuu • Rai Do † • Koku'Ou † • Rin Gyoku † • Ba Jin • Do Mon • Koku Shuu Ba • Den Shun • Fuu Han • Sou Ha Kou • Ra Gen • Ei Bi † • En Ka † • Ryuu † • Sei Chou Commanders Hyou Shiga • Rin Bou † • Dou Kin † • En • So Sui • Na Ki • Ga Ro • Gaku Rai † • Man Dou • Suu Gen • Den Yuu • Bi Hei • Taku Kei • Chu Tetsu • Den Ei • Ryuu Yuu • Ryuu Sen • Hai Rou • Nan Chin • Son Jin • Koku Kin • Shou Taku • Kyuu Kou † • Ei To • Shi Tou • Shou Sa † • Kyo Gai • Ken Fu • Setsu Kou † • Tai Go • Chuu Ki • Kai • Ro Bin † • Sou Gen • Ro En • Kaku Un † • Duke Da Rin † • Shin Kaku Gaku † • San Shuu • Shu Ma • Zenou • Ogiko • Ma Ron • Han Zen • Chi Shun • Gai Ma • Dan Sa • Kei Kyou • Kaku Bi • Baku Koshin • Jou Han • Tai Un • Kaku Ei • Ei Gan • Gi Kou • Ran Dou • Seki Shou • Koku Shou • Ba'In • Chou • Ben Ro Strategists Ka Ryo Ten • Mou Ki • Kai Oku • Kou A • Kin Ryuu Adjutants Ban You • Ko Zen † • Rai Ki • Chou Shi • Shi Ryou • Mon • Mou Chi • Mou Ryuu † • Gaku Ga † • Den Kou • Hi Ri • Gu Nei • Soldiers Kyou Rei • Kei • Kou • Su Jun • Ki Hou • Kan To • Ton Brothers (Ton Koku • Ton Kaku • ) • Sou Tan • Sou Jin • En Kaku • Ri Gi • Do Nan • Juu • Ro Hei • Taku Brothers • Riku • Rin • Shou • San Ta • Gan Jin • Ha'In • Chou Bi • Chou Kei Affiliates Western Mountain Confederation • Yo Tan Wa Army • Bajio • Tajifu • Shunmen • Kitari • Katari † • Enpo • Danto • Pipo • Ponan • Iarya • Toji and Fuji • Ramauji • Rankai • Seki • Hashuken • Blue Stone Tribe • Wei Royal Family An Ri † • Kei Bin • Prime Minister Gek Ka Kou • Officials Ha Ri • Shin Ryou Kun City Lords Ryuu Tai • Citizens Shi Kika † • Military Great Generals Go Hou Mei • Gai Mou • Fire Dragons of Wei Go Hou Mei • Gai Mou • Go Kei † • Shi Ei † • Rei Ou † • Shou Sen † • Ba Tou † • Tai Ro Ji † Generals Ran Bi Haku • Jun Ei • Ryuu Han • Haku Ki Sai † • Kyuu Gen † • Ba Kai † • Fuu Haku ‡ • Kou † • Ga Gyuu † • Shi Tai † • Commanders Gyo'En • Shuu Kou • En Bi • Ba Shu Ri • Ba Kai † • Tei Bi • Gi Ryou † • Gou Tan † • Kan Toku † • Duke Haku † • Fuu Kan † • Kou Ri Gen † • Dou Sei † • Strategists Jun Sou • Ha Ri • Hyou Ki ‡ • Affiliates Ren Pa • Ren Pa Army • Four Heavenly Kings • Rin Ko † • Gen Pou † • Yan Royal Family Sho † • Ki • En Tan Prime Minister TBA Officials Guo Wei • Zei † Citizens TBA Military Great Generals Ordo • Gaku Ki † • Geki Shin † Generals Raku'A Kan • Chou In Commanders Yuki • Otaji • Numeiyu • Kyon • Gyon • Senshu Bi Strategists TBA Affiliates Quanrong • Mountain Tribes of Yan Zhao Royal Family Bu Rei † • Tou Jou † • Yuu Boku • Ka • Earl Chou Ki † • Prime Minister Kaku Kai • Ri Boku Officials Hi • Shun Pei Kun • Hei To • Ko Shuu • Jou Kei • Ken Ho • Kan Sou • En Sei † • Royal Harem Kou Hi City Lords Duke Hoku Ryou • Duke Son Fu ‡ • Ki Shou • Gaku'in • Shi Ba Shou • Duke Kuku • Tou Kan • Tou Kin • Citizens Master Hou † • Madame Hou † • Shi Kei † • Shi Ka † • A Mon † • Kou Shou † • Kon † • En Kan • Military Great Generals Gaku Jou ‡ • Ko Chou † • Chou Katsu † • Three Great Heavens Ri Boku • Shi Ba Shou • Hou Ken † • Ren Pa ‡ • Rin Shou Jo † • Chou Sha † • Generals Ki Sui • Ba Tei • Kei Sha † • Kan Saro • Ji Aga † • Gaku Shou • Ba Nan Ji • Shun Sui Ju • Fu Tei • Kotsu Min Haku • En Kan • Ri Haku • Kou Son Ryuu ‡ • Earl Rai • Chou Haku • Mai Kou • Kai Gou • Ryuu Tou † • Gou Ki • Kou Ki Ou • Kou Shi • Shin Sei Jou † • Fuu Ki † • Man Goku † • Chou Sou † • Gaku'Ei † • Chou Ga Ryuu † • Gyou’un † • Kin Mou † • Earl Kou † • Shin Ri Kan † • Zet Su † • Jyou Ka Ryuu † • Ko Haku Kou † • Gaku Haku Kou † • Ryuu Haku Kou † • Ryuu Fu † Commanders Kaine • Ba Fuu Ji • Fuuon • Shi En • Sai'u • Mei Fu • Kou Kaku † • Gou Ran † • Sei Kiga • Ka Hou • Kai Shin • Koku Rai • Koku Rei • Zen Man • Sen Bi • Sei Mei • Seiu • Duke Sei • Ren Ka • Sou Ha • Sei Ka Un • Man Haku • Tou Gan † • Shuu † • Gi Ka † • Sou † • Shuu † • You Ou † • Ba Toku † • Den'I † • Ten † • Rai Ka † • Jo Shou † • Jo Rin † • Shin Riku † • Seki Kou † • Kou Zen † • An Ki † • Chiku Shin † • Ko Getsu † • Ta Getsu † • Ro Shin † • Chou Gaku † • Kou Tou † • Ko Ro † • Sou Kan † • Ka Man † • Kyo Yo † • Chou Riku † • Ki Shou † • Un Kei † • Un Gen † • Gou Za Kou † • Soldiers Haku Sha † • En Shou † • Ban Riku † • Kaku Jou † • Kon Jin † • Den Ko • Den Pou † • Hei Shuu † • Haku Ya • Kou Shuu • Gi Ta • Ga Kou • Kei Fu • Kat Sho • Affiliates Quanrong of Ryouyou (Rozo † • Goba † • Bunen † • Tork † ) • Geeli † • Bolf • Chida † • Tehgo • Nujah • Wan • Geni •