Yuuka, who married a man with a stepson, found herself alone after her husband died in an accident. Her stepson, Kazuki, couldn't accept his father's death and took his frustrations out on her, using her as an escape from reality. One day, their classmate, Shintaro, discovered their situation. Kazuki begged him to keep it a secret, but the mischievous Shintaro retorted, "Then lend me your mother too!" and pressed his advances...