The Sai Army consists of the officers, soldiers and civilians that took part in the defense of the city of Sai against the Ri Boku Army. Later on, with their regular army in their city, they were now trying to fight Ai Army's rampage.
The army was formed from the remnants of Sai's inhabitants who chose to fight to the end. Ei Sei commanded the army by himself. He chose several commanders to led the wall defenses. Shin on south, Heki on the east, Shou Bun Kun on the west, and Kai Oku on the north.
Sai Army went on to prepare the way for Hi Shin Unit to attack Ai Army. But they suffered casualties from Ai Army's defenses. Shin broke the defenses and went on to assist them on retrieving Kanyou. The army was used as main force, until Shou Hei Kun and others went on.
