Arisu Sakayanagi/Relationships

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

School Chairman Sakayanagi
Arisu has a close tight-knit relationship with her father Mr. Sakayanagi, who also serves as the chairman of ANHS. However, this connection wasn't the reason why she got into the A-Class as it was revealed that under fair circumstances, Arisu has the capability to have mastery over most of the points of assessments — which, indeed, deserves to be among the ranks of the best students of her generation.

Kōhei Katsuragi
She and Kōhei 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 on 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 Kōhei 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 Kōhei 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 anime.