After losing her husband, Yukari lived alone. One day, she took in her nephews Seiichi and Ryoji as lodgers, bringing laughter and liveliness back into the house. Yet, deep inside, her loneliness continued to grow. She had kept her underarm hair, something her late husband used to love, and carried on with daily life. One day, Ryoji returned home looking unusually listless. When Yukari spoke to him, he confessed, "I can't stop thinking about your underarm hair." Surprised and conflicted, Yukari found herself confronting his feelings.