Arisu Sakayanagi/Relationships

Arisu is one of the most intellectual students at Tokyo Metropolitan Advanced Nurturing High School and is highly respected for her status.

Kōhei Katsuragi
She and Katsuragi are often seen together and as representatives of Class A, they get along very well. It appears Arisu is the leader in their standing as Kōhei is shown addressing her when asking for her thoughts over the matters with other classes. Despite their partnership, it is mentioned by Honami Ichinose that the two have disagreements on how to properly run things.

It seems she doesn't mind doing things behind his back or discrediting as she had Masayoshi Hashimoto make a deal with Kakeru Ryūen after discovering Katsuragi had made his own agreement. Her actions led to him being criticized for his poor judgment from the class, this shows she has no real concern for his reputation.

Kakeru Ryūen
She appears familiar with him as when she and Katsuragi were checking out the scores of each class, they saw Class C was catching up and she knew it was due to his efforts calling him persistent. They meet face to face in the courtyard where they spoke with Kakeru remarking on how it looked as if she established her rule in the school very quickly. He swore to her that he will take down all the classes including hers so that he could rule the school as she found his declaration interesting and accepted the challenge.

Kiyotaka Ayanokōji
No direct interaction has been seen yet between the two. In the LN, at the end of Volume 5, they have encountered each other, as she states she knows something about Kiyotaka and the White Room, as well as his past. According to her, she seems to know him very well.