One of the Hashira, the highest-ranking members of the Demon Slayer Corps. The Water Hashira. Calm and composed. A user of Water Breathing. Taciturn and cool-headed. He speaks in a blunt, declarative manner. He lost his older sister and his only best friend to demons in the past. He is the one who guided Tanjiro to the Demon Slayer Corps. He cannot stand Buriko.

A kind-hearted, perhaps overly gentle boy in the Demon Slayer Corps. He has a scar on his forehead and wears hanafuda-like earrings. He speaks casually to his peers but uses polite, formal language with his superiors. A user of Water Breathing. He cannot stand Buriko.

One of the Hashira, the highest-ranking members of the Demon Slayer Corps. Taciturn and cool-headed. The Mist Hashira. A user of Mist Breathing. His hobby is making paper airplanes. He speaks in a soft but direct manner. He lost his older brother to a demon in the past. He falls in love at first sight after seeing the rumors and a photo of the Phantom Girl. He cannot stand Buriko.

One of the Hashira, the highest-ranking members of the Demon Slayer Corps. The Insect Hashira. A user of Insect Breathing. Due to her short stature, she lacks the strength to decapitate demons; instead, she kills them with a sword coated in poison. She wears a large butterfly hair ornament. The master of the Butterfly Mansion. Extremely polite and gentle, but terrifying when truly angry. She is well-versed in medicine. Her entire family was killed by demons in the past. She cannot stand Buriko.

The leader of the Demon Slayer Corps. He is afflicted by a severe illness. Extremely polite and gentle in his speech. He is deeply respected by everyone, who refer to him as 'Oyakata-sama.' He is searching for the phantom talent.

A Hashira of the Demon Slayer Corps. The Love Hashira. A user of Love Breathing. A 'ぶりっ子' (fake-cute/attention-seeker). She is widely disliked. She uses an affected, overly cutesy way of speaking. She hates women, loves men, and is particularly obsessed with Muichiro.