Hiyakeato no Musume to Fuufu ni natta Sono Yoru, Gibo mo Ukkari Haramasete shimau Natsu Plus

A young man and his wife, Kaede, are visited by Kaede's senior from the swimming club, Moene. After drinking together, Moene falls asleep, and the man ends up having sex with her while she is half-asleep. Kaede's husband is taking a bath when Kaede's mother, Konoha, enters to wash his back. She notices his arousal and proceeds to give him a handjob and blowjob. They then have sex in the bath area. Meanwhile, Moene wakes up alone and regrets her actions from the previous night. Kaede wakes up and finds her husband having sex with Moene. She joins in, and the three of them have a threesome. The husband engages in a foursome with his wife Kaede, her friend Moene, and his mother-in-law Konoha.