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! After learning about Yamato's past, the two of them grow closer as the dreaded day of the Family Meeting arrives. Yamato's completely unexpected statements send violent tremors throughout the Hazakura-gumi, but how will Mio feel when she meets Yamato's father for the very first time...?