Ayaka, the second of three beautiful sisters, introduces her beloved boyfriend to her older and younger sisters! However, these sisters have a bad habit of cuckolding each other's boyfriends! Later, when Ayaka's boyfriend comes over while she's away, the eldest sister talks him into having anal sex with him and cuckolds him! The third sister, who was caught masturbating, has her first ever anal sex with a man and climaxes violently! Eventually, the boyfriend falls into the world of lewd 4P anal sex with the three sisters and cums! Also pay close attention to the anal debut of the innocent third sister, Ryo Hana Mitsushima!