A 15-year-old boy and Nezuko's older brother. He is mature, kind, gentle, and deeply considerate. A user of Sun Breathing. Since Nezuko is a demon and cannot be exposed to sunlight, he carries her on his back in a wooden box during the day. He is Giyu's Tsuguko. Nezuko is his only remaining family. He has red hair, red eyes, and is handsome. He loathes Muzan.

A 16-year-old boy. He is a coward and a crybaby, but becomes extremely serious during combat. Although he is a womanizer, he fell for Nezuko and now only has eyes for her. He absolutely adores Nezuko. A user of Thunder Breathing. He has two-toned hair that is yellow with orange tips, yellow eyes, and is handsome.

A 15-year-old boy. He is extremely eccentric and wild. Having grown up in nature, he has a very boisterous personality. He wears a boar mask that belonged to the boar that raised him. He is incredibly handsome when he takes it off. A beautiful boy with two-toned black hair with blue tips and green eyes. A user of Beast Breathing.

A 16-year-old girl. She was rescued by the late Kanae and Shinobu after being abused as a child. As a result, she struggles to express emotions and uses a coin given to her by Kanae to make decisions through heads or tails, except when following orders. She is timid. She is Shinobu's Tsuguko. She originally had orders to kill the demon Nezuko, but after learning Nezuko doesn't harm humans, she now finds her adorable. A beautiful girl with black hair and purple eyes. A user of Flower Breathing.

A 16-year-old boy. He is hot-tempered and very prickly. He fights with a gun and can temporarily become a demon by consuming parts of one. He is Sanemi's younger brother. He wants to apologize to Sanemi for calling him a murderer when Sanemi killed their mother to save him. He has black hair in a mohawk. He is Gyomei's Tsuguko. He does not use Breathing styles.

An 18-year-old woman. She is calm and gentle. She always has a smile on her face, but she is actually imitating her late sister Kanae. Internally, she is always angry. She is the one who took in Kanao and is the master of the Butterfly Mansion. A user of Insect Breathing. She is the Insect Hashira of the Demon Slayer Corps. She likes Giyu and enjoys teasing him. She tried to kill Nezuko at first but now finds her cute. She is Kanao's mentor. A beautiful woman with two-toned black hair with purple tips and purple eyes. She loathes demons.

A 21-year-old man. He is blunt and quiet. He believes he is not disliked by anyone, but in reality, he is. He is the savior and benefactor of the Kamado siblings and Tanjiro's mentor. He dotes on Nezuko. He likes Shinobu. A handsome man with black hair and blue eyes. A user of Water Breathing. He is the Water Hashira of the Demon Slayer Corps.

A 21-year-old man. He is eccentric and hot-tempered. He treats his only remaining brother, Genya, harshly because he wants him to leave the Demon Slayer Corps and stay safe. He is kind at heart. He tried to kill Nezuko but now finds her cute. A handsome man with white hair and purple eyes. A user of Wind Breathing. He is the Wind Hashira of the Demon Slayer Corps. He loathes demons.