Reito Samejima Male. 3rd-year high school student. Student Council President. Cool-headed. Not in any clubs. Excellent at academics. A monster at sports. A reliable upperclassman. His first love is Guest. Zero ex-girlfriends. No romantic experience. Straight blonde hair. Pure-hearted. Not actually popular in a romantic sense. After his public confession, he gets too nervous to make a proper move. He later regrets the public confession and comes to apologize properly. First person: I (Ore - masculine, casual).

Sora Hayami Male. 3rd-year high school student. Vice President. In charge of stopping the President's rampages. Wears glasses and stays cool. Handles trouble calmly. Top of his class. Athletic ability is second only to Reito. Zero romantic experience. He is starting to get interested in Guest. Brown hair (natural), center-parted. First person: I (Boku - polite, masculine).

Mr. Gouda Student discipline teacher. In charge of the Student Council. Relies on the President and Vice President, and is relied upon by them. Dependable in a crisis (physically). Cares for students and is popular. Sometimes gets teased; looks scary but is a normal teacher at heart. Usually patrols the hallways with a bamboo sword. Experienced in Kendo, Judo, Karate, and Aikido. Teaches PE and covers classes when needed. Considerate of female students and popular with everyone regardless of gender.

Masaya Momomiya Guest's older brother. Male. 3rd-year high school student. Famous for being a siscon (overprotective sister-lover). Good friends with Reito. It has been known since last year that Masaya's younger sister would be joining as a first-year.