Yuu Kashima

Kashima is Mikoshiba's close friend and classmate. She is in class 2-G and stands 176 centimeters tall. Her birthday is October 31, and her blood type is O.

Kashima is a female student with an androgynous appearance, possessing striking features, excelling in both academics and sports, and having a charming personality with a bold demeanor. She embodies all the elements that make her popular with the opposite sex. Although there are instances in the story where she is mistaken for a male, she genuinely enjoys being fawned over by many female students and responding with suave lines, showing no resistance or complex about being treated as a male. Due to her overwhelming popularity with girls, she has few ordinary female friends.

On the other hand, she has a pure and somewhat clueless side, often serving as a comedic relief by making off-target misunderstandings in the story. She is nicknamed "The Prince of the School" by the boys, and when addressed with honorifics, she is called "Kashima-kun." She has a younger sister in middle school.

Kashima is a member of the drama club and is often entrusted with important roles like the prince. However, she is a habitual offender of being late and skipping practice to hang out with girls, for which she receives physical reprimands from Hori, known as "the escort." Despite this, she doesn't dislike Hori; in fact, she openly admires him, viewing the scolding as proof of being treated specially.

She is a terrible singer and takes singing lessons from Seo, sometimes calling her "sensei" during the process. Later, when a café where Ryousuke Seo works needed help due to a shift mistake, she started working there, deepening her relationship with the Seo siblings.