Mako supports her husband, who is the track and field club advisor. One day, she takes care of an injured member of the club, Takeda, at home... Takeda, who has a secret desire for her body, takes advantage of the opportunity to be alone and force himself on her. Mako, who has not had sex for a long time, cannot resist and says, "I can't do it, but if it's anything else..." and gives him a blowjob... She sucks his young cock with gusto, and before she knows it, the feeling of her mouth being violated dominates her. And under the pretext of supporting the track and field club, the act escalates...