Schoolgirl Ai was molested by the same old man on the train almost every day. Even if she wanted to change the morning commute to school, she endured being molested by the same old man on the same train because she lived in the countryside and there weren't many trains. One day, my mother introduced me to someone who wanted to get remarried, and it turned out to be that perverted old man. The days that continue to be molested begin.