miyu, a track club member, is told that she is on the line for participation in the tournament and applies to participate in an intensive training camp. however, when she arrives at the training camp, there are only miyu and the coach there. taking advantage of the fact that there are no other club members, the coach starts touching miyu's body, who is doing an air chair, with lewd hands. anticipating that miyu cannot resist, the coach presses the tip of his glans against miyu's vaginal opening under the pretext of making her endure the air chair... miyu desperately tries to endure, not wanting to lower her hips, but eventually her physical limits are reached and her dick is gradually inserted 1 centimeter, 2 centimeters...