Season 4

Shouryuu begins his tale about Atsuyu, an officer of Gen State who raised a rebelliion against his rule. And of Koya, a boy that was raised by a pack of monsters.

Shouryuu continues his tale of Atsuyu. With Rokuta held captive in Gen State, Atsuyu sends a messenger to Shouryuu at Kankyuu, to give him his terms.

The river embankment is under construction causing Atsuyu to fear that the king is attempting to flood his town. Rokuta discovers Atsuyu's father, Genkai, weakened and locked in a cell.

Atsuya loses support from his people when the people rebel against Atsuya's army for attempting to destroy the dam that the king had ordered his men to built. Later face to face with the King of En, Atsuya is given a choice to either surrender or to take the throne by a one to one sword battle.

En-O concludes his tale of Tatsuyu and the Gen State rebellion.