Ayaka, who broke up with her husband 10 years ago, was living alone after taking custody of her only son, Taichi. She wants to live with Taichi, and wants to live with him for the rest of her life. In her lonely life, Ayaka's feelings for her gradually turned into an abnormal affection. One day, her ex-husband died in an accident and Taichi came to Ayaka. Taichi also only wanted to see Ayaka again.
