Former teacher Ryouko engages in classroom roleplay with her former student Tooru, escalating into sensual teasing that ignites a new passion between them. She performs masturbation while dressed as a stewardess, indulging in aggressive, dominant play. Meanwhile, she has intense sex with her lover Akira starting from midday. After announcing her engagement to Tooru, she sneaks into bed with her sleeping husband and suggests nighttime sex. Pretending a drunken Akira is her husband, she quietly moans as she passionately and intensely pleads for more, trembling with desire.