Nanami, the ace of the track and field club, was a sprinter with the potential to compete at the national level. However, just before the big competition, she suffered a leg injury. Seto, a male manager who once knew the pain of failure himself, now supports her. Will she make it in time for the tournament? Through grueling rehabilitation in the gym, sports hall, and pool, and one-on-one intimate massages, Nanami spends long hours alone with Seto. Her boyfriend, Takizawa, begins to suspect she is cheating and forces himself on her, engaging in aggressive sex... Between Takizawa, who seems only interested in fucking her, and Seto, who gently cares for both her heart and body, the heat transmitted through their touching skin grows. As if to fill an indescribable anxiety, their relationship transcends mere support, transforming into a deep, passionate lust where they intensely crave each other's hearts and bodies.