This spring, the daily life of married teacher Iyo, who worked at the same school as her husband, was peaceful—until that incident. Everything had been going smoothly, both at work and at home, until one day her husband witnessed delinquent student Takahashi bullying someone on campus. After a heated argument, her husband shoved Takahashi, causing him to injure his finger. When Takahashi demanded an apology, Iyo was forced to offer compensation in a shocking way to protect her husband: she had to bare her large breasts as a sign of sincerity. As she undressed under pressure, exposing her mature body, she unknowingly took the first crucial step down a path that would lead to the ultimate betrayal—her husband's beloved wife stolen by a delinquent student.