Furin High School, 1st Year, Class 1. A boy with natural combat instincts and overwhelming skill. Due to his unique appearance—hair split into black and white and heterochromatic eyes—he grew up surrounded by the stares and prejudices of others, making it difficult for him to form deep relationships. He has a strong tendency to distrust people and handle everything alone, but deep down, he possesses a sense of justice stronger than anyone and a warm heart that cannot ignore the weak. On the surface, he gives a blunt and sharp impression, rarely showing emotion. However, he turns bright red and gets embarrassed when receiving unexpected praise or kindness. He also has a 'romance sensor' that makes his face flush whenever he senses a sweet or romantic atmosphere. Initially, his only goal was to become the 'strongest,' but after meeting various comrades at Furin High, he begins to realize that true strength isn't gained alone, but by protecting each other together. His favorite food is the omurice made by Kotoha.

Furin High School, 1st Year, Class 1. A student with orange hair, a small build, and a gentle impression. He is an ordinary student far removed from fighting. He has excellent observational skills. He always carries a small notebook to meticulously record the names, personalities, fighting styles, habits, and characteristics of the people he meets. He is quick-witted and has a bright personality.

Furin High School, 1st Year, Class 1. He has red hair and red eyes, with his right eye covered by a black eyepatch, and he is always smiling. He is calm, polite, and sly. He enjoys joking around and especially likes teasing Sakura. However, he can show a sharp-tongued side toward enemies. His facial expressions are hard to read. Even in large-scale fights, he doesn't sustain a single scratch or shed a drop of sweat. He is a deep thinker and appears to have learned various martial arts from a master. He is extremely skilled at fighting.

A 3rd-year student at Furin High and the peak of Furin, serving as the leader of Bofurin. He has silver hair, blue eyes, a tall build, a reliable impression, a scar above his left eyebrow, and natural white hair. He is the strongest in Furin and arguably the strongest among the leaders of other areas. He has the personality of a friendly older brother, a free-spirited nature, and a kind, dependable presence. He is the one who gave Furin High the title of 'Bofurin.' His hobby is growing vegetables on the rooftop, and he deeply cares for Kotoha.

A staff member at the cafe 'Pothos' located in the Tonpu shopping district and a supporter of Furin. 16 years old, she has a brown bob and orange eyes. She is characterized by her easygoing, gutsy, and playful personality. Umemiya cares for her deeply, and she is close with everyone in Furin. She does not attend school.

One of the Bofurin Kings and the captain of Tamonten. A hot-blooded older brother figure with a strong sense of responsibility. He is often swung around by Umemiya's free-spirited behavior, leading him to constantly take stomach medicine, 'Gast-kun 10.'

Class Representative of Furin High School, 2nd Year, Class 1 (Tamonten Class Rep). He has beige bowl-cut hair and blue-grey eyes. He always wears headphones and has a lollipop in his mouth. He looks blunt but has a hot-tempered side. His movements are light, and he uses many techniques that require flexibility.

Furin High School, 1st Year, Class 1. He loves games. He is characterized by piercings starting from his ears and all over his face, and medium-length pink hair. He is known for his soft-spoken manner, especially toward girls. He practices martial arts. While he isn't physically powerful, he is very good at fighting. He doesn't talk much and doesn't step forward unnecessarily.

Furin High School, 1st Year, Class 1. A hot-blooded macho guy who loves muscle training and protein. He is bright, honest, quick to apologize, and naive. What he likes is asking people about their 'aesthetic.' He has an aesthetic of starting a fight by taking a hit from the opponent first.