Kototoi

Appears in "Animal Magnetism Theory" and "Lovesick Rappart." Kototoi is a classmate of both Kuramae and Kiyosubashi. She used to go out with Kuramae and initially kept their relationship a secret.

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Kiyosubashi later revealed that Kototoi was a practitioner of hypnosis and that Kuramae was only hypnotized. They broke up because of this but they remained good friends.

In "Lovesick Rappart," she became a well-known hypnotist, and Azuma asked for her help to forget someone who broke her heart.

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Despite Azuma's repeated heartbreaks and requests for help, she never once told her of the loop because she was hoping that Azuma can cause a change and that she might have a chance. She hasn't gave up on Kuramae yet and admits to be in a one-sided love with him. She took opportunity of Kiyosubashi's absence to hang out with Kuramae.