Track and field club member Yui was informed that she was on the borderline for competing in the big tournament, so she applied to participate in an intensive training camp. However, upon arriving at the camp site, only Yui and her coach were present. Taking advantage of the absence of other team members, the coach began to grope Yui's body as she sat on an air chair. Seeing that Yui couldn't resist, the coach pushed the tip of his penis against Yui's vaginal opening under the pretense of enduring the air chair…Yui desperately tried not to lower her hips, but eventually reached her physical limit and was slowly penetrated one centimeter at a time.
