I have an idol that I admire. She is Wakaba, a beautiful girl with an angelic smile that is said to come only once every 1,000 years. When Wakaba-chan became my younger sister due to her parents' remarriage, she was happy for a short time, but at her home, she was always very nice and kind. My longing for her was shattered, but I happened to see Wakaba masturbating, and from that day on, I began to be used as a vibrator to relieve my idol's sexual desires...