50-year-old caregiver Rumiko kindly assists a client who requested a massage for shoulder pain. Confident in her skills, she gently explains, "I'm really good at massage, you know." As the client begins to feel relaxed, his demeanor gradually shifts from calm to increasingly affectionate and suggestive. Initially trying to remain composed and reason with him, Rumiko slowly finds her heart stirred by his warmth and tenderness. Eventually, the emotional barriers she built to protect herself come crumbling down, leading her to surrender her body. Just as her heart and body tremble, the story deepens steadily, drawing her into an inevitable intimacy.