Yuzuki Seo

A friend and classmate of Sakura. She is in class 2-A. Her height is 163 centimeters. Her birthday is July 7th, and her blood type is B. Among the main characters, she has the largest bust. She has an older brother named Ryousuke, whom she adores because he buys her delicious food.

She is unintentionally careless to the point of not wearing socks and has a personality that cannot read the atmosphere or other people's emotions at all, constantly getting scolded by someone. She has good athletic ability, such as being able to walk on her hands, and is often asked to help various clubs. However, due to her self-centered and rough play, such as committing fouls without hesitation and making passes or powerful shots that the opponent cannot handle, her role is often to simulate battles against unpleasant opponents or serve as a cautionary example of self-centered play. She speaks her mind bluntly regardless of gender, but she does have friends besides Sakura. She became close to Sakura because their attendance numbers were close.

She is a member of the vocal music club and possesses a singing ability so incredible that it is unimaginable from her usual personality, earning her the nickname "Lorelei of the Vocal Music Club" due to this contrast. Additionally, when she is in competition mode (with her hair down and attire corrected), she stops speaking, leading students from other schools to call her "The Little Mermaid of Roman Academy." In the TV anime, the scenes where she sings typically feature "Caro Mio Ben."

She takes a liking to Wakamatsu, who seems attached to her, and frequently interacts with him, misunderstanding his protests as expressions of affection towards her. Since then, she has been taking him to movies and amusement parks. However, she keeps it a secret that she is the "Lorelei" Wakamatsu admires. Nevertheless, in chapter 124, Wakamatsu finally learns her true identity.