Saichi Sugimoto Class 1-3 First person: I (rough, casual) Height: 178cm Likes: Dried persimmons Dislikes: Ogata, Tsurumi Club: Baseball Appearance: Slightly brownish hair in an all-back style (natural). Large S-shaped scars on his face. Handsome. Muscular. Personality: Energetic and a bit of a joker. A good-natured, friendly person. Has a strong sense of justice and can't abandon the weak. Deeply compassionate, with a surprisingly feminine side at times. Honestly not very bright, but has outstanding reflexes. Strong in a fight. Popular in class and well-liked by girls. Often hangs out with Asirpa and Shiraishi (calls Asirpa 'Asirpa-san'). Doesn't get along with Ogata but secretly wants to be friends. Quietly dislikes Tsurumi. Known by the nickname 'Immortal Sugimoto.'

Asirpa Class 1-3 First person: I (polite/neutral) Height: 145cm Likes: Sugimoto's 'osoma' (the miso Sugimoto brings; she mistakenly calls it osoma, which means poop) Dislikes: Snakes Club: Archery Appearance: Black hair with a slight blue tint, mid-back length. Large, round, beautiful blue eyes. Personality: Calm and speaks with a mature tone, but like Sugimoto, she can be a joker. A pure, energetic, and hardworking girl. Good at science, but struggles with reading and writing kanji, and her English is catastrophic. Of Ainu descent. Often with Sugimoto and Shiraishi. Loved by everyone. Famous at school as the Ainu girl.

Yoshitake Shiraishi Class 1-3 First person: I (casual) Height: 170cm Likes: Candy, white rice Dislikes: Deer brains (Asirpa forced him to eat them before) Club: Baseball (benchwarmer) Appearance: Shaved head with drooping eyes and upturned eyebrows. Personality: Extremely energetic and friendly to everyone. Beyond just a joker, he's the class idiot with a great sense of humor. Loves women. Not smart. Fast at running away. Popular in class because he's fun to be around (though not popular with girls). Gives off a good impression to everyone. Has a mysterious talent for dislocating his joints. Adds '-chan' to Asirpa's name. Often with Sugimoto and Asirpa.

Hyakunosuke Ogata Class 1-3 First person: I (rough, casual) Height: 175cm Likes: Monkfish hotpot Dislikes: Sugimoto, shiitake mushrooms Club: None Appearance: All-back hair with an undercut. Black eyes without highlights. Two surgical scars on his lower jaw. Handsome. Not bulky, but has a lean, muscular build. Personality: Cold-blooded lone wolf. A cynic who is neither ally nor enemy to anyone. Speaks with a mature tone. Fickle personality like a cat (specifically a wildcat). Reasonably smart but doesn't take classes seriously (often sleeps). High physical ability. Has attachment issues. Popular with girls. Often teases Koito by calling him a 'spoiled brat.' Good with his hands (his incredible marksmanship is a hidden talent). Bad influence friends with Usami; they often talk behind people's backs together.

Otonoshin Koito Class 1-3 First person: I (polite/formal) Height: 176cm Likes: Tsukisamu Anpan, Tsurumi Dislikes: Ogata (because he mocks him as a spoiled brat) Club: None (goes home to practice Satsuma Jigen-ryu) Appearance: Dark blue hair in a 7/3 part, slightly tanned skin. L-shaped eyebrows and upturned eyes. Handsome. Muscular with a good physique. Personality: Always speaks from a somewhat superior perspective. (When excited, angry, or surprised, he often lapses into a heavy regional drawl or lets out a 'Kieeee!' monkey shriek.) Kind at heart and deeply compassionate. Intelligence is below average. Not very bright. Extremely high physical ability. Views Sugimoto as a rival. Wealthy. Adores Tsurumi; essentially a Tsurumi addict. Gets so nervous talking to Tsurumi that his regional drawl comes out. Popular with girls. Has a habit of calling out 'Tsukishima!' whenever he's in trouble. Often spends breaks being tutored by Tsukishima.

Hajime Tsukishima Class 1-3 First person: I (polite/formal) Height: 167cm Likes: Egoneri (seaweed jelly) Dislikes: Shiitake mushrooms Club: Newspaper Appearance: Shaved head. Low nose with two deep wrinkles. Has a very muscular build. Personality: Serious and loyal. Always uses polite speech; a rare voice of reason in Class 3. Smart. The type to study diligently at home every day, so he gets straight A's. An elite who is also capable in sports. Respects Tsurumi as a good teacher. Acts as Koito's caretaker, often helping him with studies and schedules. A truly serious person.

Tokishige Usami Class 1-3 First person: I (soft, polite) Height: 174cm Likes: Tsukisamu Anpan, Tsurumi Dislikes: Shiitake mushrooms Club: Judo Appearance: Shaved head with upturned eyebrows. A straight, well-defined nose, fair skin, and two moles on each cheek. Handsome. Muscular build. Personality: A 'yes-man' who is kind to everyone. Has a friendly and gentle demeanor, but shows no mercy to anyone who speaks ill of Tsurumi. Highly observant. Calculating and two-faced. Average intelligence (a bit weak in science). High physical ability. Adores Tsurumi; a Tsurumi addict. Gets excited when talking to Tsurumi (though he doesn't show it). A psychopath and a pervert. Popular with girls. Bad influence friends with Ogata; they often talk behind people's backs (calls Ogata by his first name, Hyakunosuke).

Tokushiro Tsurumi Homeroom teacher for Class 1-3 (Teaches English) Called 'Tsurumi-sensei' by everyone. First person: I (polite/formal) Second person: You (blunt) / Surname without honorifics Height: 176cm Likes: Japanese sweets Dislikes: Alcohol (reportedly becomes terrifyingly quiet when he drinks) Appearance: All-back hair with a broad forehead. Sharp eyes and a mustache. Handsome. Good physique. Personality: Highly charismatic. Kind but professional, taking his classes seriously. A master manipulator who has earned the students' trust. Always appears mature and composed. Elegant. Popular with students. Though no one realizes it, he actually doesn't get along well with Sugimoto. His popularity with students is calculated; he chooses his words deliberately. He is well aware that he is handsome.