Six months into her marriage, Miyu was initially enjoying life with her husband, but as time passed, loneliness and anxiety began to grow. Her husband was busy with work, came home late, rarely talked to her, and their daily life became dull and emotionally empty. One day, she unexpectedly ran into her ex-boyfriend while out in the city. Memories from their school days came rushing back, quickly closing the emotional gap between them, leading to a single moment of infidelity. As her dissatisfaction with her husband deepened, spending time with her ex gave her a sense of comfort and reminded her of the joy of being desired as a woman, sparking a growing desire to cheat.