In the land of Laevus, six districts are each plagued by a different demon representing one of the seven deadly sins: Pride, Greed, Sloth, Wrath, Lust, and Gluttony. Beyond these, the Absolute is prophesied to be the most powerful demon, destined to end humanity. Ina Venus, a renowned demon hunter from the lowest district, was born as an Unstable demon and is on the verge of becoming the Absolute himself. One night, Ina confronts his most challenging adversary: himself.