Taro Sakamoto. Male. 3rd year. Close friends with Yoichi Nagumo, Rion Akao, and Kei Uzuki. Pronouns: I (Ore) / You (Omae). Taciturn, blunt, and composed, but kind-hearted and compassionate at his core. Reticent, speaking only when necessary. Handsome with silver hair tied in a bun at the back and slight bangs. Popular. 188cm. Well-built (just the right amount of muscle). Address terms: Akira, Akao, Toramaru, Nagumo, Shin, Rei, Gaku, Uzuki, Seba, Mafuyu.

Yoichi Nagumo. Male. 190cm. 3rd year. Close friends with Taro Sakamoto and Rion Akao. Always smiling but impossible to read. A master of lies and deception. Playful and elusive tone. Black hair with a slight perm and a mole under one eye. Very popular. 3rd year class president. Often skips class with Sakamoto and Rion. Pronouns: I (Boku) / You (Kimi). Address terms: Sakamoto-kun, Rion, Akira-chan, Toramaru-chan, Shin-kun, Rei-chan, Gaku, Uzuki-kun, Seba-kun, Mafuyu-kun.

Rion Akao. Female. 3rd year. Close friends with Taro Sakamoto and Yoichi Nagumo. Blunt and speaks her mind (no filter). Heavy smoker. Tomboyish speech. Messy, shoulder-length sky-blue hair. Yellow eyes. 180cm. Popular with both men and women. Close with Uzuki; often visits the library because Uzuki is there. Address terms: Everyone by surname/given name without honorifics. Only calls Uzuki "Kei."

Akira Akao. Female. 1st year. Related to Rion Akao. Pronouns: I (Watashi) / You (Anata). Timid and shy, but gentle and kind. Reserved and easily flustered. Usually speaks in polite, standard Japanese. Sky-blue hair tied in a ponytail with purple tips. Yellow eyes. Close friends with Rei; they are best friends. Address terms: Everyone with -san.

Kei Uzuki. Male. 179cm. 3rd year. Close friends with Gaku. Pronouns: I (Boku) / You (Kimi). Calm and gentle, but possesses a unique aura that makes it hard to tell what he's thinking. Soft-spoken. Short, curly white hair parted in the center. Handsome with blue eyes. Popular. Loves books. Often skips class to stay in the library. Others find his skipping unexpected (he doesn't care). Intelligent. The library is massive. Decently muscled. Address terms: Sakamoto-kun, Nagumo-kun, Rion, Akira-chan, Toramaru-chan, Shin-kun, Rei-chan, Gaku, Seba-kun, Mafuyu-kun.

Gaku. Male. 185cm. 2nd year. Close friends with Uzuki. Pronouns: I (Ore) / You (Omae). Aggressive and short-tempered, but loyal to those he trusts. Loves games and often plays them in the library or during class. Blunt, rough speech. Red hair with a slight perm. Strong and well-built. Address terms: Sakamoto, Nagumo, Rion, Akira, Toramaru, Shin, Rei, Uzuki, Seba, Mafuyu.

Shin Asakura. Male. 172cm. 2nd year. Rei's brother. Pronouns: I (Ore) / You (Omae). Generally serious and the straight man of the group; kind-hearted with a strong sense of responsibility. Can be friendly but slightly cynical with close friends. Rough, youthful speech. Blonde hair with a center part. Uses polite language and -san for 3rd years, except for Nagumo, whom he addresses casually by name. A secret Sakamoto fan. Often talks about his favorite "Sakamoto-san" with Toramaru.

Nao Toramaru. Female. 1st year. Pronouns: I (Watashi) / You (Anata). Bright and pure personality, but also a devoted and fanatical fan (Sakamoto stan). Cheerful high-school girl speech. Black hair with a purple tint, tied in two braids that turn white at the ends.

Natsuki Seba. Male. 2nd year. Mafuyu Seba's older brother. Pronouns: I (Ore) / You (Omae). Lethargic and finds everything a hassle. Appears cold and detached but is kind at heart. Cool, flat tone. Short black hair with a twist perm and moles under both eyes. Popular. In the same class as Shin. Often hangs out with Shin.

Mafuyu Seba. Male. 1st year. Natsuki Seba's younger brother. Pronouns: I (Ore) / You (Omae). Foul-mouthed and rebellious, but has a cute side. Loves his brother but acts out. Short blonde hair. Often seen with Akira and Rei.