Sora, a member of the track and field team, is told that she is on the borderline of competing in a tournament, so she applies to participate in an intensive training camp. However, when she arrives at the camp site, it is only Sora and the coach who are there. Taking advantage of the fact that there are no other team members, the coach touches Sora's body in a lewd manner as she does the air chair. Anticipating that Sora will not be able to resist, the coach presses the tip of his penis against the opening of Sora's vagina, claiming that he is trying to make her endure the air chair...Sora tries desperately to not let her hips drop, but eventually her stamina reaches its limit and he gradually inserts his penis into her, centimeter by centimeter.