After losing her husband, Yukari lived alone. After some time, she decided to let her nephews Seiichi and Ryoji live with her, and the house became lively again. However, her body couldn't help but feel lonely, so she maintained her chastity by keeping the armpit hair that her late husband loved. One day, Ryoji returned home looking troubled. When asked, he said, 'I can't stop thinking about your armpit hair.' Yukari was taken aback by this sudden confession but tried to understand his reason…
