職場の先輩教師との恋愛を実らせ、結婚後も夫と同じ学校で働くいち花。ある日、いじめの現場を目撃した夫は、怒りを抑えきれず不良生徒の剛田に暴力を振るい、怪我を負わせてしまう。「俺が訴えたら、旦那クビになっちゃうね」その過ちを盾に剛田が狙いを定めたのは、夫ではなく最愛の妻だった。夫を守るため、剛田の要求を受け入れるいち花。しかし、脅迫から始まった関係は次第にいち花の心と身体を変えていき…。

Ichika, who had a successful romance with a senior colleague at work, continues to work at the same school as her husband after marriage. One day, her husband witnesses bullying and, unable to control his anger, violently attacks the delinquent student, Gouda, injuring him. "If I sued, your husband would lose his job," Gouda says, using the incident as leverage to target not Ichika's husband, but his beloved wife. To protect her husband, Ichika accepts Gouda's demands. However, the relationship, which began with blackmail, gradually changes Ichika's heart and body…