Mio had separated from her husband before giving birth, struggling daily with diligence to overcome loneliness and sorrow. Taking a rare vacation, she traveled to a quiet hot spring inn. There, a young man served her with polite and gentle hospitality. At first, she thought him cheerful and easy to talk to, chatting with him warmly. However, she noticed a pendant he wore that looked exactly like the one she had given away during a past farewell. Realizing this, Mio became certain that he was her own son. From his story, she learned that his father had fled at night due to debt, leaving the son—listed as guarantor—to work from morning till night at the inn. Hearing this truth, something deep inside Mio began to stir.