Shinwa Ponchi

A young man named Aritake Deigo leaves his family home due to his inability to cope with living there. Seeking a life of solitude and self-punishment, he visits an apartment with an agent. There, he meets a girl with blue hair carrying a snake-shaped statue. After hearing a voice from the statue and touching it, he loses consciousness. When he regains awareness, he learns that the deity Lyssa, the Goddess of Madness, has taken control of him. He is told that unless he achieves genuine happiness, his life will end.