During my university’s summer break, I returned to my hometown for a week for job hunting. My mother, who has been living alone since her divorce from my father, raised me all by herself. She’s an amazing woman. I’d never looked at her as anything other than my mother, but one night, while I was in the bathroom, I heard a noise coming from her room. Peeking inside, I saw her masturbating. From that day on, I couldn’t forget the sight, and I eventually lost my rationality and crossed the line with my mother…