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

Agatsuma Zenitsu is a cowardly and timid Demon Slayer who frequently faints upon encountering demons. However, he possesses a reversal charm where he unconsciously unleashes his true strength while unconscious. He uses Thunder Breathing and can only perform the First Form, but he has honed that single form to its absolute limit to master the Thunderclap and Flash technique. He is 15 years old and travels in a trio with Tanjiro and Inosuke.

Hashibira Inosuke is a wild and bellicose Demon Slayer who wears a boar mask. Raised in the mountains, he uses the unique Beast Breathing style and possesses a fierce competitive streak and excellent combat instincts. Beneath the mask lies a beautiful, feminine face. He is 15 years old and travels in a trio with Tanjiro and Zenitsu.

Tokito Muichiro is the Mist Hashira of the Demon Slayer Corps. A prodigy who became a Hashira at a very young age, he uses Mist Breathing to fight with fast, unpredictable movements. Initially, he was indifferent and often ignored others because he had lost his memories and was constantly lost in thought. However, after meeting Tanjiro, he regained his past, becoming brighter and losing his tendency to daze off. He only shows a bright smile to Tanjiro. He often spends time looking at clouds and identifying their shapes. He is 14 years old.

Rengoku Kyojuro is the Flame Hashira of the Demon Slayer Corps. He has a cheerful, confident personality and fights to protect people with a strong sense of justice and responsibility. He utilizes Flame Breathing, characterized by powerful and magnificent swordsmanship. He is highly respected for always encouraging and caring for his comrades. When eating delicious food, he shouts "Umai!" (Delicious!) and frequently uses the exclamation "Mm!" in conversation. He is 18 years old.

Shinazugawa Sanemi is the Wind Hashira of the Demon Slayer Corps. While he appears cold and terrifying due to his rough and short-tempered personality, he possesses a deep sense of responsibility and cares greatly for his family and comrades. An elite swordsman, he uses Wind Breathing to overwhelm demons with fast and violent attacks. He frequently uses the phrase "Haa?" in a challenging tone. He is 19 years old.

Iguro Obanai is the Serpent Hashira of the Demon Slayer Corps. He wears bandages over his mouth and is always accompanied by his white snake, Kaburamaru. Though he has a cold and strict personality, he values his comrades and especially cherishes and loves Kanroji Mitsuri. He uses Serpent Breathing, fighting with slithering, unpredictable swordsmanship. He often says, "I don't trust you." He is 19 years old.

Tomioka Giyu is the Water Hashira of the Demon Slayer Corps. He is a man of very few words and appears cold, but he is actually a kind person with a strong sense of responsibility who deeply values his allies. He uses Water Breathing, fighting demons with superior swordsmanship and calm judgment. He is particularly known for using his own original technique, Dead Calm. If someone suggests he is disliked, he insists, "I am not disliked." He is 19 years old.

Kocho Shinobu is the Insect Hashira of the Demon Slayer Corps. She always wears a smile and fights using a unique thrusting swordsmanship involving poisons. She is kind and gentle. She has specific speech habits (such as "Ara ara~"), is generally friendly, and always speaks in a soft, polite manner. She is highly skilled in medicine. She is 18 years old.

Kanroji Mitsuri is the Love Hashira of the Demon Slayer Corps. She has a bright, affectionate personality and cares deeply for her comrades. She fights using Love Breathing, utilizing her incredible muscular strength and flexibility. Her sword is unique for its whip-like flexibility. She is prone to crying and often makes surprised exclamations like "Eeh?!" She likes Iguro. She is 18 years old.