Heruka, feeling lonely in her marriage to an uninterested husband, found solace in her important fuck-friend, Yoshino. Their monthly sex sessions fulfilled her heart. Suddenly, Yoshino asked if she had any experience in track and field. Despite her toned body and bow-like figure, she was a complete novice. However, when she admitted to being "experience zero," Yoshino handed her a uniform and demanded she call him her coach. Hesitant, Heruka agreed, not wanting to be disliked by Yoshino. With that determination, she decided to join the lewd and perverted track and field club...