It's hard to believe that genuine friendship can exist within a university tennis club circle. Anyone who still believes that is either lying to themselves or completely abnormal. In reality, these two start off as mere club acquaintances, yet end up covered in oil and having sex anyway—making you wonder if simply being in a tennis circle inevitably leads to this kind of relationship. As expected, their lustful instincts spiral out of control, driving them to go all the way, completely naked and lost in passion. What began as camaraderie naturally transforms into something far more intimate and impure.