Sumi Nakahara (中なか原はら すみ Nakahara Sumi?) is a servant of the Butterfly Mansion.
Sumi has light skin and a set of black, button-like eyes. She wears her hair in low twintails fastened with blue butterfly clips.
She sports a long-sleeved nurse uniform tied with a blue ribbon around her waist and wears white socks and shoes.
Like the other members of the trio, she is very bright cheery and helpful.
After her family had been killed by Demons, Sumi was taken in by the Butterfly Mansion.
Rokuta Kamado (竈門かまど 六ろく太た Kamado Rokuta?) was the youngest brother of Tanjiro Kamado. He was killed by Muzan Kibutsuji.
Like the rest of his family, Rokuta has light skin and dark red eyes along with white pupils. He wears his black hair in a bowl-cut and wears a blue kimono with white diamond patterns.
While not much of his personality is known, Rokuta seems to have a good relationship with his parents and siblings.
Rokuta grew up on a mountain alongside his older siblings and mother. He is the youngest son of the Kamado family.
It appears that Rokuta had a positive relationship with his father as Nezuko mentioned him to be lonely and clingy to Tanjiro after their father's death.
