I went on a hot spring trip with my beautiful and proud mother, and I got so excited by seeing her defenseless naked body that I couldn\'t tell anyone about it. (美人で自慢のお母さんと二人で出掛けた温泉旅行で無防備な母の裸体に興奮してしまい思わず犯してしまった人には言えない過ち) - Series