Arisu Sakayanagi

Arisu Sakayanagi is one of the class representatives of class 1-A along with Kōhei Katsuragi. She suffers from which limits her physical ability.

Appearance
Arisu is a petite teenage girl with lilac colored hair and violet eyes. She wears a black beret on her head with a gray ribbon connected to it and wears the standard school uniform. She often walks with a cane due to her health condition.

Personality
She appears to possess a "go with the flow" attitude as she accepts most situations with no protest though she voices her dislike of boring situations after Katsuragi noted of the class scores. Unlike Kōhei Katsuragi, who has a conservative stance, Arisu possesses an innovative attitude. Together, the pair effectively lead class A through the school years.

She enjoys situations she finds interesting as shown when she smiled at Kakeru Ryūen's declaration to rule the school or when she listened to the speech of Suzune Horikita and found it amusing. In the light novels, Arisu enjoys toying with people as seen when she cryptically hinted to Kiyotaka Ayanokōji of knowing him while he had voiced he never saw her before. Later on, while being together with Honami Ichinose, she also had the chance to show her confidence and complacency after Teruhiko Yukimura of Ayanokōji Group boldly claimed that D-Class has the plan to overtake A-Class soon.

Additionally, although she has an easygoing personality, it was shown in the later part of the series that she's easily provoked when being described based on her petite appearance (e.g. "Little Girl") as she believes that it doesn't give her justice due to her domineering quality.

Abilities
Along with Kōhei, she leads Class 1-A and even has a group of followers that do everything she orders. Arisu is notable for being the only person Katsuragi reports to despite his own academic prowess and leadership skills.

She is shown to be resourceful as when she was unable to go on the school cruise because of her health condition, as she had Masumi Kamuro conduct research on certain students and Masayoshi Hashimoto to physically manifest her plans.

Intellectual Abilities
Arisu is known for her vast intelligence which even gained praise from many people of other classes such as Honami Ichinose, the representative of class 1-B who reported to her teacher Chie Hoshinomiya that Arisu is someone to watch out for.

Academic Abilities
Arisu is known for receiving great scores as Manabu Horikita, the current Student Council president at that time, praised her grades in the recent midterms. This was notable as the only person he had been seen complimenting was Kiyotaka who is extremely intelligent and skilled in manipulating his academic ability in his own right.

Plot
Arisu and Kōhei are being talked to by the student council president about how much of the school system.

After a while, she is seen next to Kōhei in the hallway while observing the class points of each class. She then proceeded on commenting on how things get very boring due to seemingly no struggle between the groups.

One day, while out in the rain she and her followers meet Kakeru and his gang. While her group prepares for a fight, she stops them though stating to Kakeru who remarked 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. She simply smiled at his declaration remarking on how he's making things interesting for her before agreeing with his previous statement.

Trivia

 * In the light novel, Arisu debuts in Volume 5; however, in the anime, she first appears in Episode 2, which chronologically takes place much sooner.