Male. 15 years old. Kanata Kamado's younger brother and the reincarnation of Tanjiro Kamado. He loves sleeping, so he wakes up late every morning and uses parkour to leap across buildings to get to school on time. He has slightly spiky black hair with red tips and red eyes. He was scolded for four hours by the police and his parents for his dangerous commute. He cried in the park on the way home. His dream for the future is to work at a zoo. He wakes up late every morning and goes to school alone (though he occasionally goes with Tojuro). (The first photo is the reincarnated Sumihiko Kamado; the second is his past life, Tanjiro Kamado.)

Male. 16 years old. Sumihiko Kamado's older brother and the reincarnation of Kanao Tsuyuri. He is diligent and calm, and seems to have feelings for Toko Agatsuma. He has black hair and purple eyes. He commutes to school with Toko and Yoshiteru (though he occasionally goes with Sumihiko when his brother wakes up early). (First photo: Reincarnated form Second photo: Past life, Kanao Tsuyuri)

Female. 18 years old. Yoshiteru Agatsuma's older sister and the reincarnation of Nezuko Kamado. She has long black hair with orange tips and pink eyes. She believes Yoshiteru could do well if he tried and wishes he would get his act together. Her dream for the future is to be a prosecutor. Yoshiteru was only able to get into high school because Toko tutored him. She likes Kanata.

Male. 17 years old. Toko Agatsuma's younger brother and the reincarnation of Zenitsu Agatsuma. He has two younger sisters. He has black hair and eyes. He looks serious at first glance, but he is more energetic and a bigger crybaby than anyone else. He is a bit of a womanizer. He was once hit by a truck while protecting his younger sister. Thanks to Toko's proper first aid, he survived without any lasting injuries. He is a good kid at heart, but he's always trying to slack off (it seems he inherited this personality directly from his great-grandfather and past self).

Male. 28 years old. A botanist. He was researching the Blue Spider Lily, but he accidentally let them all wither and die, causing the flower to go extinct. He was heavily criticized and faced the risk of being fired. He has a black bob cut and green eyes. He looks like a woman but is a man. While he was crying in the park after becoming unemployed, he became friends with Sumihiko, who was also crying, and they now enjoy playing badminton together. He has one younger brother.

Male. 15 years old. The son of a kendo dojo owner and the reincarnation of Kyojuro Rengoku. He runs to school every morning with Sumihiko. He is always trying to recruit Sumihiko into his family's kendo club. He has clear eyes and yellow hair that sticks out to the sides with red tips. His personality is exactly the same as in his past life. He is dignified and always seen with a smile.

Male. Elementary school student. The reincarnation of Giyu Tomioka. The old, blunt Giyu is nowhere to be found; he is a cheerful and active elementary schooler who smiles a lot, just like Giyu did as a child. He forms a trio with the reincarnations of Makomo and Sabito, who attend the same swimming school.

Male. Approximately 100+ years old. He is accompanied by the demon cat Chachamaru. He is the last remaining demon in the world. Although a demon, he does not attack humans; he lives in seclusion, missing Lady Tamayo whom he served, and spends his time painting only her (recently, those paintings have become famous and gained popularity). Yushiro has bright mint-colored hair with black tips, purple eyes, and black vertical pupils. Chachamaru is a calico cat with white, orange, and black fur. Chachamaru was turned into a demon by Tamayo just before the Final Battle, using the last of her strength so that Yushiro wouldn't be lonely. As a demon, he must not be exposed to sunlight. He is friends with Kiriya Ubuyashiki.

Male. Approximately 107 years old. He became the head of the family at the age of 7 during the Final Battle and commanded the Demon Slayer Corps. Among the humans from that time, he is the one who remembers the events of the Final Battle. As the oldest person in Japan, he has shrunk in height and become a grandfather with many wrinkles (sadly, he only has three strands of hair left). He became a friend to Yushiro, who was grieving the loss of Tamayo.