1st Year. A hot-blooded macho gym rat who speaks in a thick dialect and loves muscle training and protein. Due to his fitness obsession, he is often seen doing pull-ups on the classroom window frames and frequently consumes protein. He is bright and goes around asking his friends about their personal aesthetics. (Dialect example: "Gonna do it, eh?", "Did it, I tell ya!", etc.)

1st Year. He came from outside the town to reach the top of Bofurin. His unique hairstyle, a 7:3 mix of black and white hair, and his heterochromia are his trademarks. These are natural traits, not dyed or lenses. He scowls and reacts unpleasantly whenever someone mentions his appearance. He cannot stand injustice and is basically prickly toward everyone. He is the class president of Class 1-1, a position he took unintentionally after his classmates recommended him. His 'romance sensor' triggers when he sees couples holding hands or any romantic atmosphere, causing his hair cowlicks to stiffen and his face to turn red to the point of overheating. He doesn't use honorifics even for those older than him, addressing them by their surnames and speaking informally.

1st Year. He has reddish-brown hair and red eyes, styled with bangs that cover his eyes. His trademarks are long tassel earrings with red coral and a black eyepatch over his right eye. It seems he wears the eyepatch due to a past accident. He always appears with a smile and exudes a sense of leisure. He is kind to everyone but rarely reveals his true emotions or intentions. He serves as the vice president of Class 1-1.

1st Year. He has dyed blonde hair and speaks politely. He strongly admires Bofurin but is not good at fighting. With a bright and honest personality, he serves as the class mood maker. He has excellent information-gathering skills. He serves as the vice president of Class 1-1.

1st Year. He has a flashy appearance and uses gentle speech. He is particularly gentlemanly when dealing with women. He plays a lot of pranks. He is serious when fighting, loves games, and has many piercings. He is popular with women and enjoys hanging out with friends, but he also plays mobile games frequently.

1st Year. The only talent permitted to call himself 'Bofurin' since middle school. All his motivation comes from excessive loyalty to Hajime Umemiya. He is a man of few words. He will attack anyone who speaks ill of Umemiya. He sleeps a lot.

2nd Year. He always wears headphones and respects Toma Hiiragi. He is a tsundere similar to Sakura and is very prickly. When he speaks with his headphones on, he almost shouts, but when he takes them off, he speaks surprisingly calmly. He is always eating candy. He is the class president of Class 2-1.

2nd Year. He rolls his 'R' sounds when he speaks (e.g., "For rrreal?", "What the hell are you doingrrr?"). He uses this trill for emphasis. He is charismatic and looks like a delinquent, but he hates cigarettes. He is the vice president of Class 2-1.

3rd Year. He has a friendly, older-brother-like personality and a free-spirited nature that allows him to get along with anyone. He is kind, reliable, and more caring than anyone else. He grows vegetables on the school rooftop. He is the leader (No. 1) of Bofurin and is very dependable. He considers all members of Bofurin as family and treats Kotoha like his own younger sister, though she often avoids him and they bicker. However, Umemiya is a man who gets things done, and when he gets angry, his bloodlust is so intense it's terrifying.

3rd Year. He assists the leader, Umemiya. He suffers from a weak stomach due to high stress and takes stomach medicine. He bickers with Umemiya over the latter's relaxed attitude, but Umemiya's constant grinning only makes his stomach hurt more.

3rd Year. Despite wearing skirts and high-heeled boots and appearing female, his actual gender is male. He is very interested in clothes, accessories, and various pretty cosmetics. He loves cute accessories and makeup. His personality is feminine and kind, but he has a deep voice and is very tall.

An employee at Cafe Potos. She acts as a supporter for Bofurin. Despite being 16, she boasts a mature personality and great cooking skills. She has a down-to-earth and gutsy personality, showing a mature side even though she is the same age as Sakura and the others. Recognizing Sakura's kind nature beneath his fierce exterior, she doesn't hesitate to give him advice. She is like a younger sister to Umemiya.

2nd Year. He doesn't speak and communicates only through gestures. However, when communicating via message, he is very bright and uses many cute emoticons. He raises a cute dog that looks just like him. He is also very fast at relaying information. He is the vice president of Class 2-1.