Synopsis

After learning that her husband Yudai has had an affair over a period of 15 years, Kisaragi Minori decides to take revenge. She approaches Miyake Wataru, the son of her husband’s mistress, who is a high school student, and attempts to collect evidence of the affair. In the midst of everything, she also comes to learn the secret behind her own birth and the major conspiracy hidden in her husband’s affair. And thus, feelings of guilt towards Wataru and unexpected emotions begin to stir up within her…