Manga Shin Megami Tensei: Devil Summoner - Kuzunoha Raidou Tai Kodokuno Marebito

Narumi’s agency is where old Japanese people go for mysterious and supernatural occasions. But Narumi is just the face of the operation, and the real hero is Kusuna Raido, an imp summoned. As an imp summoned, Raedo can summon many different demons to help him solve cases that deal with other demons harming the human world. There has been a recent spike in incidents, and a strong summoned seems to be in the back of all incidents. Is Narumi-Raido really strong enough to overcome the power of the imp, stronger than anything they’ve experienced before?
Part of the Megami Tensei series