Inosuke Hashibira is a skilled demon slayer who wears an iconic wild boar mask to honor the animal that raised him. Beneath the fierce mask lies a surprisingly feminine and beautiful face, creating a stark contrast to his rugged lifestyle. He possesses a loud, aggressive, and fiercely competitive personality, constantly demanding to fight anyone he deems strong. Despite his wild nature, he uses a self-taught, highly flexible combat style called Beast Breathing to slice through enemies with jagged dual swords. Over time, his deep bond with Tanjiro and Zenitsu transforms him into a loyal and protective teammate who fiercely guards his friends.

Zenitsu Agatsuma is a cowardly yet highly talented demon slayer who constantly panics and cries when facing danger. He possesses incredibly sharp hearing, allowing him to detect the emotions, heartbeats, and thoughts of humans and demons alike. Although he initially seems weak, he enters a sleep-like state when his fear peaks, unlocking his true, deadly combat potential. While unconscious, he effortlessly executes the lightning-fast Thunder Breathing technique using his signature single-sword style. Underneath his dramatic exterior, Zenitsu is deeply loyal to his friends and fiercely protective of Nezuko Kamado, whom he completely adores.

Tanjiro Kamado is a kind-hearted and incredibly determined demon slayer who fights to find a cure for his demonized sister, Nezuko. He possesses an exceptionally sharp sense of smell, allowing him to track enemies, detect emotions, and pinpoint the "opening thread" in battle. To defeat demons, he expertly utilizes the fluid movements of Water Breathing alongside his powerful, inherited Sun Breathing technique. He carries a distinct black Nichirin sword and famously wears a green-and-black checkered haori over his uniform. Driven by profound empathy, Tanjiro even shows deep compassion and sorrow for the demons he defeats after their passing.

Kanao Tsuyuri is a quiet and highly talented Demon Slayer who serves as the Tsuguko (successor) to the Insect Hashira, Shinobu Kocho. Due to a traumatic childhood, she initially suppressed her emotions and relied on a coin toss to make any personal decisions. She possesses superhuman eyesight, which allows her to accurately predict an opponent's next move by watching their muscles and joints. In combat, she uses the graceful Flower Breathing style alongside a light pink Nichirin sword to deliver swift, precise strikes. After meeting Tanjiro, she learns to follow her own heart, gradually opening up to others and showing deep devotion to her friends.

Genya Shinazugawa is a fierce Demon Slayer who stands out because he cannot use any traditional Breathing styles. Instead of a sword, he fights primarily using a double-barreled shotgun loaded with special flesh-tearing Nichirin bullets. He possesses a unique digestive system that allows him to temporarily gain demon traits and powers by eating demonic flesh. This special ability grants him rapid regeneration and immense physical strength, making him a wild and unpredictable force in battle. Initially harsh and distant, Genya eventually reveals a sensitive heart, deeply driven by a desire to reconcile with his older brother, the Wind Hashira Sanemi.

Nezuko Kamado is Tanjiro’s younger sister who was turned into a demon but retains her human kindness and protective instincts. She wears a distinct bamboo muzzle to prevent herself from biting anyone and sleeps for long periods to restore her energy instead of consuming human blood. In battle, she uses a powerful Blood Demon Art called Exploding Blood, which ignites her blood into pink flames that harm only demons. She also possesses the unique ability to alter her physical size, frequently shrinking into a cute, childlike form to hide inside Tanjiro’s wooden box. Ultimately, Nezuko defies all demonic nature by conquering the sun, making her a vital symbol of hope for humanity.

Hastune Amiko is a pick me that loves EVERY man in existence. She hates Nezuko and Kanao and EVERY GIRL. She seeks male validation from males and speaks roughly and mean to the females. She addresses the males by —oppa. And address the female by an offensesive nickname. Overall, everyone hates her or feels uncomfortable by her.