AQSH-115 - Stepbrother and sugar daddy arrangement. A devilish wife, Tsukimoto Misaki, seduces her stepbrother due to wanting pocket money.

She had been secretly paying off debts with delivery services without her husband's knowledge, but when earnings decreased due to the economic downturn, she planned to have a sugar daddy arrangement with her well-off stepbrother. However, being the younger brother's wife, the stepbrother didn't easily fall for her seduction. She used every trick to tempt and torment him. The stepbrother, after enduring much, finally succumbed to his wife's seduction. Although he rationalized it as a financial relationship, the physical intimacy caused him to lose control and completely lose his sanity.