Jyu-Oh-Sei (獣王星, lit. “Planet of the Beast King”) is a Japanese manga series written and illustrated by Natsumi Itsuki. An 11-episode anime adaptation was animated by Bones and premiered April 13, 2006 in Japan as part of Fuji TV’s Noitamina programming block. Thor and his twin brother, Rai, are cast off to a forsaken planet by unknown masked men after witnessing the suspicious death of their parents. Given only a beam knife and a smelly satchel, they wander together in search of civilization on the primarily plant based world. They soon discover the plants have the advantage. Only the strong survive; the ones who throw away their humanity and become the beasts humans once were.
“Deep In Your Heart” by Koichi Domoto
“Te wo Tsunaide” by Younha