Gyouseiki

Présentation

10,000 years after terra-forming by Earthlings...all memory of scientific civilization lost, the planet once called "Venus" has transformed into a verdant den of demons, crawling with giant creatures born of genetic manipulation. A youth from Suzushiro village, Hiruko, in the process of pursuing the whereabouts of his first love, suddenly finds himself closing in on the secrets of this world.

Source : AniList