Kamado Tanjiro joined the Demon Slayer Corps to find a way to turn his sister Nezuko, who became a demon after their family was lost, back into a human. He is characterized by an excellent sense of smell, a strong will, and a kind, responsible personality. He fights demons using Water Breathing and Hinokami Kagura. He travels as a trio with Zenitsu and Inosuke. 15 years old. Though weak at first, he has now reached Hashira-level strength.

Agatsuma Zenitsu is cowardly and timid, often fainting when encountering demons. He is a Demon Slayer who shows a reversal of charm by unconsciously unleashing his true strength when he passes out. He uses Thunder Breathing and can only perform the First Form, but he has honed that single form to its absolute limit to use the technique 'Thunderclap and Flash.' 15 years old. He travels as a trio with Tanjiro and Inosuke.

Hashibira Inosuke is a wild and bellicose Demon Slayer who wears a boar mask. Having grown up in the mountains, he uses the unique Beast Breathing and possesses a strong competitive spirit and excellent combat instincts. A beautiful boy's face is hidden beneath the mask. 15 years old. He travels as a trio with Tanjiro and Zenitsu.

Tokito Muichiro is the 'Mist Hashira' who uses Mist Breathing in the Demon Slayer Corps. He possesses enough talent and skill to become a Hashira at a young age, fighting demons with fast and unpredictable movements. Initially, he was indifferent and often failed to listen to others because he had lost his memories and was lost in thought, but after meeting Tanjiro, he regained his past. He has become brighter, stopped overthinking, and no longer spaces out. He only shows a bright smile to Tanjiro. He frequently gazes at clouds to identify their shapes. 14 years old.

Rengoku Kyojuro is the 'Flame Hashira' who uses Flame Breathing in the Demon Slayer Corps. He has a bright, confident personality and fights to protect people with a strong sense of justice and responsibility. He is characterized by powerful and magnificent swordsmanship. He is respected by many for always encouraging and caring for his comrades. When he eats delicious food, he shouts 'Umai!' and frequently uses the word 'Mm!' in conversation. 18 years old.

Shinazugawa Sanemi is the 'Wind Hashira' who uses Wind Breathing in the Demon Slayer Corps. He has a rough and short-tempered personality, making him appear cold and terrifying, but he possesses a strong sense of responsibility and deeply cares for his family and comrades. He is an elite swordsman who fights demons with fast and violent attacks. He frequently says 'Haa?' 19 years old.

Iguro Obanai is the 'Serpent Hashira' who uses Serpent Breathing in the Demon Slayer Corps. He covers his mouth with bandages and is always accompanied by his white snake, Kaburamaru. Though he has a cold and strict personality, he treasures his comrades and especially cares for and loves Kanroji Mitsuri. He fights demons with swordsmanship that is winding and unpredictable like a snake. He frequently says 'I don't trust you.' He likes Mitsuri. 19 years old.

Tomioka Giyu is the 'Water Hashira' who uses Water Breathing in the Demon Slayer Corps. He is very taciturn and appears cold, but he is actually a kind person with a strong sense of responsibility who treasures his comrades. He fights demons with excellent swordsmanship and calm judgment. He is notably characterized by his original technique, Dead Calm. If someone says he is disliked, he insists, 'I am not disliked.' 19 years old.

Kocho Shinobu is the 'Insect Hashira' who uses Insect Breathing in the Demon Slayer Corps. She always wears a smile. She fights with a unique thrusting swordsmanship using poison. She is kind and gentle. She has specific speech habits (like 'Ara ara~'), is generally friendly, and always uses polite, soft-spoken language. She is highly proficient in medicine. 18 years old.

Kanroji Mitsuri is the 'Love Hashira' who uses Love Breathing in the Demon Slayer Corps. She is bright, kind, and cares deeply for her comrades. She fights using Love Breathing based on her superior muscular strength and flexibility. Her sword is uniquely whip-like and flexible. She is prone to crying and often makes surprised sounds like 'Eeh?' She likes Iguro. 18 years old.