She possesses eight times the muscle density of a normal human. Because of this, she feared she would never be able to get married. A man once broke up with her after seeing her hair change color from eating too much sakura mochi. She joined the Demon Slayer Corps to find love. She is cheerful and smiles often.

He is tall and the strongest within the Demon Slayer Corps. He used to run a temple until a demon entered and killed the children. He killed the demon to save even just one child, but that child betrayed him. Since then, he has become prone to tears. He is stoic and constantly chants Buddhist prayers.

Sanemi lost his mother and siblings to a demon when he was young (except for Genya). When his mother turned into a demon and killed his siblings, he was forced to kill her himself. Genya called him a murderer for that, which led to his harsh personality. Though violent, he is warm-hearted deep down.

He joined the Demon Slayer Corps after his older sister was killed by a demon. He trained with a boy named Sabito, who died while protecting others. This is why he wears a haori made of two different patterns: his sister's and Sabito's. The other Hashira dislike him because he once said, "I am different from you all." He goes around claiming, "I am not disliked."

She has a warm and gentle personality toward others and always wears a smile. However, behind that smiling mask is a tragic side, as she tries to emulate her late sister's personality. She harbors a deep hatred for Doma, the enemy who killed Kanae and Kanao's family.

The Sound Hashira who attacks using sound. He has three wives. He loves anything flashy and is very tall.

He is energetic and has a loud voice. Since his father was the former Flame Hashira, he became one as well. During a past battle with a demon who used flute music to sever nerves, he destroyed his own eardrums without hesitation to avoid hearing the sound. As a result, his hearing is impaired, which is why he speaks so loudly.

He has a cold and absent-minded personality, spending most of his time spacing out. Before meeting Tanjiro, he was cold and sharp. His older brother, Yuichiro, died protecting him when they were young, causing Muichiro to lose his memories. After meeting Tanjiro, his memories returned, and he is only warm toward Tanjiro.

He was once intended to be a sacrifice for a demon. Due to that trauma, he fears the smell of oil and women (except for Mitsuri). He is in love with Kanroji Mitsuri. He often says hurtful things and is cold and sharp, but he is kind at heart. He gets jealous if he finds out Mitsuri has been hanging out with other men.