One day, Yuuko, an eighty-year-old grandmother, finds her grandson heartbroken and depressed over love. Seeing his sorrow, she decides to comfort him by letting him touch her proud, voluptuous breasts—once famed for captivating countless men. Despite her age, her body remains highly sensitive, responding vividly to his touch. Unaware of the intense reaction he's causing, her grandson gets drawn deeper into the forbidden intimacy, crossing the line between solace and desire.