Ai, a high school girl, was molested by the same old man on the train almost every day. Even though she wanted to change her morning commute, there were few trains in the countryside, so she always had to endure being molested by the same old man on the same train. One day, her mother introduced her to someone she wanted to remarry, and it turned out to be that old man... The kind-hearted girl, who can't resist when she thinks of her mother, begins to be molested not only on the train, but also at home.