Kyôsei hitozuma: Nikuyoku no ureta wana.

Yuko inherited a vast fortune from her wealthy father. Her husband, Ichiro, was a typical good-for-nothing, constantly losing money despite running several restaurants. He was also a gambling addict, and his debts grew and grew. One day, Yuko decided to divorce him and used her husband's younger brother, Jiro, who looked exactly like him…