Kingdom Wiki
Chinese Hai Yin
Romaji Kaine
Biographical Information
Marital Status Single
Age Mid 20s
Gender Female
Eyes Dark Green
Hair Dark Brown
Skin Pale
Relatives Unnamed parents (Deceased)
State Zhao
Location With the Ri Boku Army, Zhao
Birth Place Gan Mon
Professional Information
Classification Commander
Occupation Soldier
Affiliates Zhao Military
Ri Boku Army
Kaine Unit
Coalition Army
Military Rank 5000-Man Commander
Equipment Dual Swords
Japanese VA Yuuki Chisa
Manga Debut Chapter 135
Anime Debut Episode 29

Kaine is a 5000-man commander in the Ri Boku Army and one of Ri Boku's closest vassals since their days on the Gan Mon northern border regions of the state of Zhao.


Kaine is a slim, young and beautiful woman, She has long dark hair tied at the back and wears a robe with armor around her torso. Unlike most army commanders, she doesn't wear any kind of armor protection on her head or shoulders.


Kaine is a deadly serious person. She seems to be organized at all times and has a wide vision of what is happening around her. She has an eye for recognizing people's skills and she wouldn't mind befriending even an enemy if it is a worthy person.

Being Riboku's bodyguard, she is very loyal to him.


Ri Boku[]

Ka Ryo Ten[]

Fu Tei[]

Whilst they are allies, and they were both under the command of Ri Boku during the battle of sai, Kaine is frequently shown punching and physically abusing Fu Tei due to things he says and/or does.

Ba Nan Ji[]


Li Mu and Hai Yin[]

Kaine grew up in the province of Gan Mon in the northern part of Zhao, which was continuously raided and pillaged by the Xiongnu in that region. As a youth, her parents were brutally killed and she was orphaned by the Xiongnu Horse Tribes. All generals who were sent there failed to subdue the threat as they were usually too hot-headed and impatient to pursue effective strategies. Consequentially, they kept dying until Ri Boku, a relatively new and young general, was appointed there. He was able to halt the Xiongnu's raids by simply avoiding confrontation. Instead of facing them directly, he drilled the villagers into learning to evacuate and taking shelter inside the walls of Gan Mon castle during the attacks.

Initially, she and her friend Shou (Chinese: Zhao), an archer, didn't like this strategy and always wanted to face them head-on instead of cowardly evacuating, want to seek revenge for her family's death at the hands of the Xiongu. However, she soon came to realize that Ri Boku had suffered the same past as her; having been orphaned in a war and losing his brothers, and close friends. Driven mad by vengeance, he and his battalion disobeyed orders and charged at the enemy camp but his satisfaction at killing the enemy general soured upon discovering his recklessness led to his entire unit (containing the rest of his family and friends) being completely wiped out. Instead of choosing to remain the path of revenge, he chose to become a strategist in order to save his comrades' lives as often as possible instead of endangering them. Unaware that Kaine now understood Ri Boku's actions, Shou reported to central Zhao that Ri Boku was neglecting his duties so he was relieved and replaced by yet another hot-headed commander. The result is devastating, Gan Mon Castle was overrun, the replacement general was immediately killed, the majority of Zhao's forces in the region were killed, and refugees were forced to flee south. In the aftermath of a battle, Shou was killed and besides Kaine, there were only a handful of survivors. Meanwhile, Kaine was wounded, regretting what Ri Boku's exile did to Gan Mon. Soon after Shou and her comrades were buried, Ri Boku returned and started anew; much to Kaine and the survivors' relief. Some time afterward, he and Kaine were able to amass enough skilled soldiers to wipe out the next army of Xiongnu raiders; a battle that Yo Tan Wa witnessed the aftermath of upon setting out on her own campaign against the horsemen tribes.

During her service in the northern region, Kaine became a master in mountain horsemanship and a capable dual sword wielder. After Riboku left to follow his path in warfare and politics, Kaine came along with him as his bodyguard.


Battle of Bayou Arc[]

Kaine has always been seen by Riboku's side. During the first invasion in Qin and the Battle of Bayou against Ou Ki, she was with Riboku when they met Ka Ryo Ten and Mou Ki. Without realizing she was the enemy, Ten developed a friendship with Kaine.

Alliance Arc[]

When Riboku was brought to Kanyou his bodyguard followed him. Kaine was present during the discussions about the upcoming Qin-Zhao alliance and when that deal was closed, she participated in the celebration banquet. There, she was annoyed by Shin's presence and she even verbally attacked him, as Shin was being very rude to Riboku.

Before the Zhao officials' departure, Kaine met with Ten and had a little chat with her. She went on to warn her that despite the alliance, they were still enemies and that they would soon meet on the battlefield.

Coalition Invasion Arc[]

Kaine leading her cavalry unit

On the first day of the Battle of Kankoku Pass, Kaine was just a messenger. But after that, she was the leader of a secret army, sent by Riboku little by little to a remote passage that led inside the southern pass to Kanyou. After Riboku himself joined that secret army, on the night of the 15th day, Kaine entered the battle for the first time. She was seen leading a special cavalry unit, trained in mountain horsemanship, to attack the city of Rou from above.

Upon arriving at Sai, Kaine was surprised to see that the city's militia had taken up arms and was determined to make a stand, During the first day, she didn't take part in the actual battle but was rather taken aback by the militia's unusually high morale.

Kaine pushed off the walls

On the second day, Kaine's unit took action. She ascended the southern walls and attacked the defensive forces of Qin, following the lead of Fu Tei's unit. At some point, she noticed that Ten was on the walls giving orders and guiding the militia. Instead of killing her, Kaine knocked Ten out and ordered one of her vassals to bring her along as a hostage. Shin, who witnessed the scene, charged at Kaine and knocked her off the walls. Ten grabbed her hand before she could fall down and attempted to save her, but Kaine was determined to either take Ten with her or kill her right there. Shin called Bi Hei to finish the enemy off with his spear, and that was when Kaine had no other choice but to let go. As she fell, she was caught by the Zhao soldiers, leading to her not being fatally harmed at all.

Conspiracy in the Court Arc[]

After their defeat in the Coalition War Fu Tei and Kaine followed their master, Ri Boku, in his exile in the small city of Domei near the Zhao-Wei borders.

Bureaucrats Job Arc[]

When Ri Boku escorts the Qi King, she was part of the entourage. She was also seen shouting at Ei Sei when Sei said he was going to destroy all the states through martial might to Ri Boku.

Western Zhao Invasion Arc[]

She was alongside Ri Boku in the Battle at Shukai Plains. and later on, the failed attempt to relieve Gyou. Some of the Kantan's royal guards threatened Ri Boku to kill her and a few more of his subordinates if he doesn't follow them to the capital, as per the king Tou Jou's orders.

Zhao Crisis Arc[]

She was alongside other members of the Ri Boku Army, fighting King Tou Jou's loyalists in an attempt to rescue Ri Boku. She was wounded in one encounter, which killed some of her men. She retreated, heavily wounded, collapsing at one point. At the time clerk Ei announced that prince Ka was removed from the line of succession, she and Ri Boku were attacked by assassins from prince Sen's faction. She managed to escape with Ri Boku and prince Ka. She was one of the vanguard escorting the carriage which had Ri Boku and prince Ka inside. The carriage was heading for Houshou. They got ambushed by an unknown army and she tried to push through them with the vanguard and Ri Boku. Afterward, she and Ri Boku decided to go back to Ba Nan Ji and not head inside Houshou with prince Ka.[1]

Battle of Eikyuu Arc[]

Zhao's Retaliation Arc[]


Strength 84
Leadership 87
Intelligence 83
Experience B
I love Ri Boku!

Strength 84
Leadership 86
Intelligence 83
Experience B
I love Ri Boku!

Strength 84
Leadership 85
Intelligence 82
Experience C
Capable dual wield swordsman

As the closest vassal of Ri Boku, Kaine is a talented commander.

Physical Abilities[]

Master Swordswoman: The best and the most skilled in her hometown, Kaine is a capable swordsman, as she has the rare talent of wielding two swords in combat.

Horsemanship: During her service at the northern regions of Zhao, she mastered the skill of mountain horsemanship, thus being able to lead her cavalry unit in mountain areas.

Tactical Abilities[]

Being at Ri Boku's side for the most part of her military career, Kaine developed an eye for strategy. She is able to tell when a scheme is being pulled and act accordingly. Asides that, she is very deductive as she was able to figure out Shi Ryou's gender based on her arm swings.




Kaine Strikes Shin.PNG
Kaine strikes Shin
Kaine and Fu Tei in Domei.PNG
With Fu Tei and Ri Boku in Domei
Kaine defeats Ka Ryo Ten.png
Kaine defeats Ten during the Battle of Sai.
Kaine sketch art.png
Sketch art


Ri Boku And Kaine's Appearance anime S1.PNG
Kaine and Ri Boku's appearance.
Kaine anime portrait.PNG
Kaine AS2.png
Kaine in Anime season 2
Ri Boku, Kaine And Kou Son Ryuu Advance To Kanyou anime S2.PNG
Kaine with Ri Boku and Kou Son Ryuu advance to Kanyou.
Ri Boku, Kaine And Kou Son Ryuu Return To Zhao anime S2.PNG
Kaine with Ri Boku and Kou Son Ryuu return to Zhao.
Kaine Character Design anime S2.PNG
Character design
Kaine talking to Ten Anime S2.png
Kaine talks with Ka Ryo Ten.
Kyou Kai and Kaine's First Meeting anime S2.PNG
Kaine and Kyou Kai's first meeting.


  • Kaine is desperately and hopelessly in love with Ri Boku.
  • While not being called one directly it was implied that during Battle at Shukai Plains, Kaine was a 3000-Man Commander, since she was leading at least 3000 soldiers in battle.


  1. Chapter 646

Royal Palace
Royal Family Rou Ai - Queen Mother

Government Chou Kou - Ko Reki
Generals Current
Han O Ki
Wa Tegi

Commanders Han Roki - Ha Mui - Bu Tai
Royal Palace
Royal Family Formerly
Shou Hei Kun

Government Shun Shin Kun
Great Generals Kan Mei - Ka Rin

Generals Formerly
Rin Bu Kun

1000-Man Commanders Haku Rei - Kou Yoku
Great Generals Sei Kai

2000-Man Commanders Formerly
Leader Jo Elder

Civilian Shuu (Jo)
Royal Palace
Royal Family Ou Ken
Generals Ganmo
Royal Family Current
Ei Sei - Queen Mother - Rei - Rui
Boku Kou - Sei Kyou - Sho - Sou Jou

Government Current
Ri Shi - Ryo Fui - Sai Taku - Shi Shi - Shou Hei Kun - Shou Bun Kun
Ketsu Shi

Royal Harem Amin - Chou Kou - Kou - Rou Ai - You
Great Generals Current
Mou Bu - Tou
Chou Tou - Duke Hyou - Mou Gou

Six Great Generals:
Ko Shou - Kyou - Haku Ki - Ou Ki - Ou Kotsu - Shiba Saku

Generals Current
Do Mon - Heki - Kan Ki - Kan Ou - Ou Sen - Roku O Mi - Ryuu Koku - Shou Kaku
Dou Kin - Ei Bi - En Ka - Koku Gou - Ra Gen - Rin Bou - Ryuu

5000-Man Commanders Ou Hon - Shin

3000-Man Commanders Kyou Kai

2000-Man Commanders Mou Ten

1000-Man Commanders Curent
Hoku Shu - Gaku Rai - Kaku Un - Kan Jou - Ogiko - Ran Dou
Baku Koshin - Jou Han - Kaku Bi - Tai Un

100-Man Commanders Chu Tetsu - Den Ei - Den Yuu - Hai Rou - Kyo Gai - Ryuu Sen

10-Squad Leaders Bi Hei - Ro En - Ryuu Yuu - Seki - Suu Gen - Taku Kei

5-Squad Leaders Former
Batsu Ken - Bi Tou - Bun Ketsu - Hou - Kyou Ji - San Ka - Yuu Gi

Strategists Ka Ryo Ten - Kai Oku - Mou Ki
Mountain Tribe
King Yo Tan Wa

Elders Chouga Elders

Warriors Ba Jio - Fuji - Rankai - Shunmen - Tajifu - Toji
Royal Palace
Royal Family Kei Bin
Great Generals Current
Go Hou Mei
Seven Fire Dragons:
Gai Mou
Go Kei - Tai Roji - Shi Ei - Rei Ou - Shou Sen - Ba Tou

Generals Current
Fuu Haku - Kan Ei
Kyuu Gen - Haku Kisai - Ga Gyuu - Rinko - Gen Bou - Kyou En - Kai Shi Bou

1000-Man Commanders Former
Dou Sei

Strategists Hyou Ki
Great Generals Current
Geki Shin - Gaku Ki
Royal Palace
Royal Family Tou Jou
Great Generals Three Great Heavens
Ri Boku - Hou Ken
Rinshoujou - Ren Pa - Chousha
Gaku Jou

Generals Current
Kou Son Ryuu - Ri Haku - Ki Sui - Ba Nan Ji - Shuu Sui Ju
Man Goku - Shou Mou - Fuu Ki - Rin Ko - Gen Bou - Kyou En - Kai Shi Bou - Kei Sha

Army Commanders Current
Ba Tei - Kin Mou - Gaku Ei - Kai Gou
Ryuu Tou

1000-Man Commander Gou Ran

Strategists Chousou

Commanders Kaine - Fu Tei

Others Gika

Merchants Former
Ryo Fui - Shi Ka - A Mon - Kou Shou