大学生カップルの七緒と信之は幸せな同棲生活を送っていた。そんなある日、2人は信之の先輩で地元のヤンキーである柳沢に遭遇する。元々、信之をいじめていた柳沢は七緒に目をつけ、信之が家にいない間に2人の家に突入。柳沢は出されたお茶に媚楽を入れて七緒に飲ませ強●発情させる。体を触られる度に感じまくってしまうと七緒は抵抗したくても気持ち良さに負けて柳沢のチ●ポを受け入れてしまう！その後も関係を迫られる七緒だったがいつしか柳沢にハマってしまい…。

College student couple Nanao and Nobuyuki were living happily together. One day, they encounter Yanagisawa, Nobuyuki's senior and a local delinquent. Yanagisawa, who had always bullied Nobuyuki, sets his sights on Nanao and breaks into their house while Nobuyuki is out. Yanagisawa puts an aphrodisiac in the tea they offer Nanao and makes her drink it, causing her to become intensely aroused. Every time he touches her body, she feels intense pleasure, and even though she wants to resist, she gives in to the pleasure and accepts Yanagisawa's penis! After that, Yanagisawa continues to pressure Nanao into having sex with him, and before long, Nanao finds herself addicted to him…