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経験人数100人超え。性に奔放だった学生時代とは打って変わって、社会人になってからは彼一筋の天宮かすみ。会社の上司である真面目な彼と3年付き合って去年ついに結婚した。結婚1年記念旅行としてやってきた山梨の温泉街で大学時代の同級生と出会う。「こんな奴らと二度と会いたくなかった……」彼らはかすみが所属していたヤリサーの仲間だった。なんとしても彼らになびかないと誓ったかすみだったが昔の思い出が徐々に蘇ってきて……。
Over 100 people have experience. Unlike her sexually unrestrained student days, Amamiya Kasumi has been a devoted man after becoming a working adult. I dated my serious boyfriend, my boss at work for three years and finally got married last year. He meets a classmate from his university days in Yamanashi, a hot spring town that he visited on a trip to celebrate his first year of marriage. “I never wanted to meet these guys again…” They were a group of the sex club that Kasumi belonged to. Kasumi vowed that she would never move on them, but her old memories gradually revived…