Yurine Kurosawa

Shiramine's classmate, a lazy genius with no motivation to do anything until Shiramine comes along and declares that she won't lose to her, piquing Kurosawa's interest for the first time.
A first year student at Seiran Academy High School. A so-called genius who, with an incredibly small amount of effort, surpasses other people and earns stellar grades. Those around her tend to maintain their distance from her, and Kurosawa herself has a habit of turning people down. She frequently takes cat naps, but she also sleeps very well. The reason she chose Seiran for high school was because, ''It's close to my house.'' She has a younger sister named Sumire.