A year has passed since the attack on the lands of Yamauchi by man-eating monkeys. Many young people, seeking to protect their homeland, enter Keishoin, an educational institution that trains Yamauchi-shu, the personal guard of the Soke house. Obeying the will of the young master, his former page Yukiya also becomes a student of the academy. He must not only become a bodyguard, but also find new supporters for the owner, because very soon he will become a ruler. However, Nazukihiko's ascension to the throne is suddenly delayed: he seems to lack some of the qualities that a Golden Crow should have. No one doubts a new attack by monkeys, so both the young warriors and their future ruler need to have time to prepare for the invasion.