Sayuki Yumihara

Height: 158cm The school's new student. A reliable and kind girl who is polite to everyone. Although she is unaware, she and the protagonist are related. The first woman the protagonist raped was her sister. She's unaware of his existence as the protagonist was blacklisted from his family. It's just a coincidence that she met him. Because of her resemblance to her sister, she reignited the protagonist's memories and regained his true nature as a tormentor.