My first love. My step-sister, Mizuki. She's innocent, intelligent, and sexy. I've been in love with her since the moment we met. One day, my sister is humiliated and loses her virginity. In the room, the setting sun shines in as she wails... I embrace her to comfort her. Feeling the softness and warmth of my sister's body, I make a decision... *Bonus footage is included in the DVD and Blu-ray versions.