When Hasumi has a chance meeting with her old high school crush, Yamato Kujo, she figures she might as well spend one night in bliss before she deals with the debt collectors that hound her steps. But when Yamato reveals he's become a yakuza member, Hasumi panics and runs away—only to have Yamato pop up again, but this time with a proposition: He'll buy her debt if she becomes his bride. But can she take the pressure and drama of becoming a yakuza wife?
Mio, stuck with her father’s debt, finds herself at a dead-end when she runs into her first love, Yamato Kujo. She’s surprised when she learns that he’s become a lieutenant for the Yakuza, and he’s willing to take on her debt in exchange for her hand in marriage! The time’s come for a direct confrontation between Yamato and Mio’s ex-boyfriend, Takizawa!! The two argue bitterly about Mio, but what happens when the respective hidden feelings they both harbor gradually go up in smoke?!