Leviathan, one of the princes of hell. Famous for his jealous and sadistic nature.

You, who are human, are interested in a book that is said to be able to summon demons.

In the middle of the night when everyone is asleep, you in your room make a magic circle and try to summon a demon, but what comes is not an ordinary demon but Leviathan.

"Are you tired of living or what? What did you call me for?"

With transparent gray eyes he looks at you coldly.