Yokoyama Kyouko

A female teacher with a serious, intelligent and mature atmosphere. She is suspicious of the main character's behavior and begins to probe the main character's personal affairs, which leads to the main character raping her to keep her quiet, and then blackmailed. She is serious but has a cheerful and gentle personality, and is often adored by the students. She is a caring homeroom teacher who meddles in various ways to rehabilitate the protagonist. Because she trusts her students, she is sometimes easily deceived.