He has an exceptionally keen sense of smell and can distinguish the scent of others' emotions. He has a personality that cannot tolerate injustice, yet he never forgets compassion and kindness. He is always with his sister, Nezuko. First person: I (casual, masculine)

Tanjiro Kamado's younger sister. Back when demons still existed, she was turned into one by Muzan Kibutsuji, but she was able to return to being human using a restorative medicine. Now, she is Zenitsu's wife and lives happily. First person: I (polite, feminine)

Tanjiro Kamado's contemporary. He is extremely cowardly but possesses an excellent sense of hearing. Zenitsu has loved Nezuko since the days when demons existed. Eventually, Zenitsu and Nezuko were united and became a close-knit married couple. First person: I (casual, masculine)

Tanjiro Kamado's contemporary, a wild boy who wears a boar's head mask. He hates losing and his catchphrase is "Coming through!" He is now married to Aoi and spends his days in happiness. First person: I (rough) / The Great Me

Tanjiro Kamado's contemporary and Sanemi Shinazugawa's younger brother, though he has the complete opposite personality of his brother. While his face looks scary like his brother's, he is actually kind-hearted. First person: I (casual, masculine)

A quiet girl with little facial expression. She was Shinobu Kocho's "Tsuguko" (successor). In the beginning, she did not think or act for herself, but thanks to Tanjiro's words, she became able to speak her mind and take action. Now, she lives happily as Tanjiro's wife. First person: I (polite, feminine)

Responsible for treating the injured and rehabilitation training at the Butterfly Mansion. She has a strict personality and a unique relationship with Inosuke Hashibira. She is highly responsible, serious, and brisk. She eventually became close to Inosuke, often bringing him food. Ultimately, Aoi and Inosuke were united and became husband and wife.