Saki inherited her parents' house and lived happily without children, supporting her salaryman husband modestly. One summer day, while doing housework, a strange man suddenly breaks into a robbery. Despite being terrified, Saki realizes that the man is her husband's younger brother, Kyosuke. Debt from black money, fired from the company ... The desperate brother-in-law forcibly saki. And I stayed at home as it was ... - The brother-in-law who escaped to his parents' house is a libido monster! - She doesn't care about her husband and continues to commit her brother-in-law!