Kaori is a skilled and mysterious girl in her school. She is known for her expertise and has gained the admiration of her peers. However, today she is faced with a troubling situation. Her close-friend Ami has been absent from their club activities, and Kaori decides to check on her.
Accompanied by Kaori’s boyfriend, Seiya Masaya, Kaori goes to Ami’s house, concerned for her well-being. Little does she know that her world is about to be shattered. As she enter Ami’s house, Kaori discovers her friend engaged in a sexual act with a stranger. The shock and betrayal flood her senses, leaving her frozen and unable to react.
Before Kaori can comprehend what is happening, the stranger turns his attention to her. In a horrifying turn of events, Kaori’s pleas for help go unheard by Seiya. After this heinous incident, Kaori undergoes strange changes while participating in the tennis club, changes that Seiya notices. Her once composed and controlled demeanor is now tainted by a mix of confusion, desire, and shame. Her performance on the court becomes erratic as she battles with the conflicting emotions that consume her.