In the story, childhood friend Shunsuke visits his friend's house and finds himself in the changing room where he encounters his friend's mother, Kanako, undressed. He has always admired her since they were young and can't help but reach out to touch her lingerie, becoming aroused. However, their intimate moment is caught by Kanako herself. Feeling pressured, Shunsuke confesses his feelings, believing that she must reciprocate due to his pure intentions. But instead of reacting negatively, Kanako seems surprised and touched by his innocent affection...