Hikari Suzukie was destined for a bright future. She is smart, popular, and funny. But everything comes crashing down when her face gets torn by an Oni. She is now cursed, disfigured, and shunned by society and even her very family.

With nothing to lose and revenge to win, she decides to join the TENiN Agency. An organization made of the most undesirable members of society, sacrificed to be bound to Tenshi, so they can eliminate the Oni who terrorized Tokotokyo. But against all odds, the Tenshi the girl ends up being bound to is not an all-powerful entity… But to Momoka, the lazy and childish Protector of the Garden of Peach… and a pacifist.