清木 澄

One of the heroines. Sumi is a student at Migouji Academy. When she was little, her parents lost their lives to a heinous criminal. Without any relatives to depend on, Sumi had to live by herself. Still, she received help from kind-hearted adults around her so that she could live alone. When her father was alive, he taught her that if you could help someone, someone will surely help you. Growing up with the teaching in her mind, Sumi strived to become a person that can help others. She is innocent and has little knowledge about sex.