A secret shared between mother and son, one they can never reveal to anyone—a hidden testament of concealed emotions. In the kitchen during twilight, in the bath at night, and within the bedroom where the father sleeps... in these places, the two silently carry their feelings. The mother's big, warm breasts are a special presence for her son. Through these moments, their bond deepens. This work portrays those hidden emotions and the irresistible impulses that can only arise within a family—a heartbreaking yet seductive story. Told from the son's point of view, it intimately captures the secret relationship, evoking deep empathy from the viewer. A quiet, truthful depiction of their secret days together.