A key character in the post-apocalyptic chapters of the saga. Starts off as a raping, pillaging marauder, only to find some semblance of purpose and redemption in becoming the Kyo-O's guardian on his long journey toward Osaka to confront the Chōjin.

Twenty-five years ago, the world was annihilated. With the coming of the Overfiend, God of all Gods, the human, demon, and beast realms collapsed together in chaos. With the promise that he would be born in 100 years to re-create his failed world, the Overfiend settled back to sleep within his mother's womb. 
But something has gone terribly wrong... 
Now the Overfiend is born prematurely and awaits the coming of his natural the enemy, the Lord of Chaos. His only hope for survival are Amano Jyaku and his sister Megumi. But destiny has moved in ways that even the Overfiend could never predict, as a new race of half-breed demon beasts has evolved. 
As Amano travels to the kingdom of Azuma to investigate the appearance of the Lord of Chaos, he is swept up in the world-conquering schemes of Caesar, Azuma's dictator. 
Against the backdrop of a demon beast slave revolt and the return of the diabolical Munhihausen, only Amano and the demon beast Buju can save the world from another fiery destruction. With the fate of the earth and its inhabitants hanging in the balance, all wait to see what the coming of the Lord of Chaos will bring...

Husband of voice actress [Junko Sakuma](https://anilist.co/staff/111433).

Directly following the conclusion of Urotsukidoji III, the survivors of the Azuma kingdom genocide travel aboard a futuristic tank with Osaka as the destination. There, they plan to face both the Overfiend and their own fates as well. Along they way, the stumble upon a civilization beyond imagination, where children cruely rule over the adults. It is up to Amano Jyaku to save his friends from this sinister land and its evil ruler, Ellis. Shortly after their encounter, Sui Kaka Ju's sister Yoenhime summons Munhihausen, who transforms her into the menacing Yoenki. At last, she is strong enough to reap revenge on Amano for killing her brother. But Munhihausen has his own hidden agendas. The Urotsukidoji legend will finally reach its climax in Osaka, when Kiojo, the sweet and innocent Himi, and the Chojin meet face to face. 