Married woman A Yumi (32) receives a cuckolding request from the organizer of a swinging club. This time, it's a special trip arranged for her, where she reunites with another married woman after a year, catching her off guard with the sudden turn of events. Her husband wasn't even informed she was going on this trip, so during the journey, they discuss her previous cuckolding experience, confessing how their marital sex life improved and how much she enjoys vibrators. Upon arriving at the hot spring inn, she's approached by a man before bathing and, as she gives in, her excitement becomes evident with arousal flowing freely. While apologizing to her husband, she sucks another man's cock and, penetrated from behind, writhes in pleasure while repeatedly saying sorry. Out in the open-air bath, she straddles the man's cock, moaning quietly in ecstasy, then back in the room, she abandons all restraint, losing herself over and over again in lewd lingerie.