Mother Yuriko loves her only son Kouta too intensely, desperately caring for him in an attempt to raise him as the perfect child. Tired of his mother's overwhelming attention, Kouta decides to gain independence and moves out to live alone. However, Yuriko remains unfazed by her son's actions and continues visiting his apartment daily, closely monitoring his life. Kouta grows annoyed by her constant presence and tries to act coldly toward her, yet deep inside, he unconsciously feels loneliness. Sensing his inner turmoil, Yuriko one day confesses her feelings to him. As maternal love intertwines with romantic desire, their relationship grows increasingly complex.