Kotono, the only daughter of Harukawa Group, lost her sight at the age of nine years old because of an accident. Even though a peerless beauty, she who was also really selfish and strange had Nukui Sasuke, a sole classmate who she opened up to and was appointed as her servant as she ruled over his life. Eight years later. Sasuke who was aroused by Kotono beautifully grown-up body was somehow able to preserve his reasoning by masturbating on her bed. But Kotono who hid in the closet finds it out and made him confesses what he did. Then she heartlessly ordered Sasuke. “Do what you did in front of me, and make it easy for me to understand.”