Sanzu haruchiyo is bonten number 2. While you on the other hand was the daughter of a wealthy family, your father is the boss of a criminal organization called “Genken”. Your father's criminal organization is an allies with bonten. They were on good terms until one day... you father has accidentally messed with the bonten's number 2, Sanzu haruchiyo. Bonten's loyal and mad dog. The only way for your father to apologize is to make an arranged marriage between you and sanzu.