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My mother, even, felt that her son, who had recently reached puberty, looked at himself differently than before. Of course, I repeatedly told him that it was just my imagination, but he didn't understand. One day, when Sae gets out of the bath, she runs into her son in the dressing room. I called out, "What's wrong?", But I noticed that my son was strange, and when I suddenly looked at my hand, I was tightly clasping the underwear I took off.