The story is set in the future on the planet named Amoi which is controlled by a supercomputer named Jupiter. Among the mostly male human population, the light-haired elite class is allowed to temporarily keep the dark-haired "mongrels" as pets. One elite member, Iason, encounters a mongrel named Riki in the slums and decides to take him in. However, Iason keeps Riki longer than it is socially approved, and rumors abound about their possible relationship.

The first episode of "season" one was pre-aired on the Fate Project New Year's Eve TV Special 2020 program.

The Hero has defeated the Demon King, but the Princess he meant to save turned out to be a Prince. NEETdom, here he comes, but a life of relaxation surrounded by anime is a pretty sweet deal. Unfortunately, he gets caught up in millennia old legends, curses, and a twisted plot involving multiple Kingdoms and many dragons. Through and through, though, he'll follow a path of whimsy, even if that involves him palling it up with "villains".

On the Tianwu Continent, the powerful dominated the weak. Feng Hao, the young master of the Feng family, possessed a rare physique but was wrongly labeled as talentless and worthless. As a result, he was frequently mocked and belittled. However, a fateful encounter altered the course of his life and destiny. Through an extraordinary process, he infused his body with rare gemstones, eventually attaining unmatched strength. This transformation set him on a journey to master the void and explore the far reaches of the universe.