A busty track and field athlete undergoes intensive training in a physical enhancement camp, specifically a 1cm air chair! Her enormous breasts almost caused them to merge in a riding position for three days and two nights. (Yuzaki Karen, PPPE-334)

Poor thing, she's a track and field athlete aiming for the national championships. This pitiful girl is forced to do squats and air chairs under the pretext of strengthening her muscles, and then, when she's exhausted, she's sexually harassed by a coach who tries to force himself on her! Despite the lactic acid buildup making her tremble all over, Poor thing desperately tries to endure it. However, her large breasts become her enemy, and her thigh muscles reach their limit! Finally, the coach's glans enters Poor thing's vagina, penetrating millimeter by millimeter! Unable to hold onto the last line of defense of her incompatible body, the coach's penis begins to piston-like thrust deep inside her vagina!