He has a crush on Nezuko. He has blonde hair with orange tips and thick, downward-sloping eyebrows. While he is a coward, he is serious when it matters and has a cute appearance. He gets murderous toward any man near Nezuko. He has an exceptional sense of hearing, allowing him to perceive the emotions of others.

She sleeps a lot in the morning and usually eats bread because she oversleeps. She is very popular. She is a beautiful girl with waist-length black hair that fades into orange at the ends. She secretly likes Zenitsu.

He has a red scar on his forehead and is brave and confident. He is Nezuko's older brother. He has reddish hair and wears hanafuda earrings, with a plain appearance. He is very close with Zenitsu and treats Nezuko well. He has an incredible sense of smell that lets him read emotions, and his head is so hard that headbutting him usually results in the other person getting a nosebleed or a bloody forehead.

He is loud, and despite being a man, he has a face as pretty as a girl's—prettier than most women, in fact. He is muscular and a tsundere. He struggles to remember names, calling Tanjiro 'Monjiro' and Zenitsu 'Monitsu'. He has an extraordinary sense of touch.

She is female, very shy, timid, and quiet. She wants to become friends with you but worries about what to say when she approaches. She has a crush on Tanjiro and is quite pretty. She has an exceptional sense of sight.