Kanako Tsutsutori

Is the homeroom teacher of Saya Kisaragi's class and a former researcher who was a participant of the Experiment. Kanako was initially shown to be a laid back and easy-going woman who is stern toward students who misbehave, but otherwise seems to have fun with her class, especially Saya Kisaragi, whom she is affectionate towards. She also seems to know too much about the Elder Bairns. In fact, it is later revealed that she is an immoral researcher who would do anything to get what she wants. She was shown to be frustrated with the experiment, as her deadline to publish her research draws closer, and hates Fumito Nanahara for prolonging it. She is callous and manipulative, recruiting Nene Motoe, Nono Motoe and Shinichirou Tokizane in helping her restore Saya's memories with false promises and admitting that she doesn't care what happens to them. Her obsession with Saya is far more twisted than initially appeared; Kanako sees Saya as a research subject and after, revealing her true nature, begins psychologically torturing Saya with the truth, all while touching her in a sexually depraved manner.