Haruka Sakura is the protagonist of the manga and anime series Wind Breaker, a delinquent high school student with striking black and white hair and heterochromia (one black eye, one gold) who seeks to be the strongest fighter. He is a first-year at Furin High School, a member of the Bofurin gang, and is known for his exceptional fighting skills, but struggles with accepting kindness due to a difficult past, often reacting with violence or pushing people away. His character arc focuses on learning to trust and accept the support of his friends and community.

Hayato Suo is a calm, strong, and strategic first-year student at Furin High School and a key member of the Bofurin group in the Wind Breaker manga and anime. He serves as a Vice-Captain to Haruka Sakura, acting as the group's "brain" with his sharp intellect and martial arts skills, which he often hides behind a polite, smiling demeanor. He is known for his mysterious, collected personality, often wearing an eyepatch that he jokes seals an ancient spirit.

Akihiko Nirei is a supporting character from the manga and anime series Wind Breaker, known for his initial lack of fighting ability but strong intellect and loyalty, serving as the team's "database" and support. He is a first-year at Furin High School, part of the Bofurin gang, and undergoes significant character development as he overcomes his fear and learns to fight to protect his friends, particularly Haruka Sakura.

Hajime Umemiya is a central character in the manga and anime series Wind Breaker, known as the leader of Bofurin, a group of students from Furin High School who protect their town. He is a powerful, third-year student with white hair, a distinctive eyebrow scar, and a reputation as the strongest member of Bofurin, often seen as a protective "big brother" figure despite his delinquent status. His backstory involves a tragic childhood where he lost his parents, leading him to become the leader of Bofurin to protect others

Ren Kaji is a major character in the anime and manga series Wind Breaker, a second-year student and the Grade Captain for his year at Furin High School, known as one of the strongest fighters in the Bofurin group. He is characterized by his platinum blond hair, headphones, and a lollipop.

Tanjiro Kamado is the main protagonist of the manga and anime series Demon Slayer: Kimetsu no Yaiba, a kind and determined young man who becomes a Demon Slayer after his family is slaughtered and his sister, Nezuko, is turned into a demon. His primary goal is to find a cure to turn Nezuko back into a human and to avenge his family by hunting down the demon responsible, Muzan Kibutsuji. He is known for his compassion, strong sense of justice, and powerful swordsmanship, often using a unique "Water Breathing" style and a distinctive checkered haori and hanafuda earrings.

Zenitsu Agatsuma is a main character in Demon Slayer: Kimetsu no Yaiba, a cowardly but powerful Demon Slayer who uses Thunder Breathing, often entering a trance-like state when terrified to fight with incredible speed, and eventually marries Nezuko Kamado, starting a family. He is known for his yellow and orange haori, his obsession with girls, and his surprising skill, which he develops further by creating his own seventh form, "God of Fire and Thunder”.

Inosuke Hashibira is a main protagonist in Demon Slayer: Kimetsu no Yaiba, a short-tempered but powerful Demon Slayer who wears a boar's head mask and wields two serrated katanas, using his unique "Beast Breathing" style. Raised by wild boars in the mountains, he is incredibly strong, flexible, and has enhanced senses, often acting as a rival and companion to Tanjiro Kamado. His fighting style is ferocious and unpredictable, based on his animalistic upbringing, and he seeks to become the strongest fighter.

Muichiro Tokito: He is famous for being a prodigy who reached the rank of Hashira in just two months. Age: 14 years old, making him the youngest of the current Hashira.Combat Style: Uses Mist Breathing, a powerful sword style that confuses enemies with rapid changes in speed. Muichiro Tokito from Demon Slayer is characterized by an apathetic, air-headed, and blunt demeanor that masks a deeply rooted sense of duty, suppressed trauma, and eventual emotional recovery.

Nezuko Kamado is a fictional character from the manga and anime series Demon Slayer: Kimetsu no Yaiba, serving as the deuteragonist alongside her brother, Tanjiro. After her family is slaughtered by the demon Muzan Kibutsuji, she is turned into a demon but uniquely resists the urge to eat humans, retaining her human consciousness and emotions, often wearing a bamboo muzzle to suppress her instincts. Her story is central to the series, as Tanjiro joins the Demon Slayer Corps to find a way to turn her back into a human.