Chinami, the only girl in the track and field club, is going to her club's training camp. While she is training hard, a man from the club comes to see her. He starts touching her lewdly under the pretense of giving her a massage. Chinami refuses, but perhaps because of her natural weakness for pressure, he gives in and inserts himself into her raw. It's wrong... but it feels good. Gradually, Chinami begins to suck the men's dicks herself, revealing her brown skin...