Genma Wars

"Genma Wars" (also known as "Genma Taisen: Shinwa Zenya no Shou") is an anime series based on the manga written by Kazumasa Hirai and illustrated by Shotaro Ishinomori. The series is set in a post-apocalyptic world where humans and mutants coexist, albeit not always peacefully. The story revolves around the twin siblings, Jin and Rei, who are the offspring of a human mother and the evil Genma king, Lord Maoh. They were separated at birth, with Jin being raised by his mother in the human world, while Rei was raised in the Genma realm by Maoh. Both siblings possess incredible powers but are fundamentally different. Jin is kind-hearted and resists his Genma nature, choosing to fight for humanity. On the other hand, Rei is raised to be his father's successor, ruling with an iron fist over the Genma realm.