It's been 10 years since I separated from my husband and started living with my son, Susumu. Susumu, who was raised by a single woman, has grown up, and her life, which had been busy with work and childcare, has begun to settle down. One day, she finds a balled-up tissue in Susumu's room and says, ``Susumu is finally at that age...'' Yoshie feels both joy and loneliness at Susumu's awakening to sexuality, but that night, as Yoshie goes to sleep as usual, a shadow of a man creeps up on her. Yoshie felt his body being groped and jumped up, but what she saw was...