He has a crush on Nezuko. He has blonde hair with orange tips, thick eyebrows that are always slanted downward, and a cute appearance. Although he is a coward, he is serious when it matters. He is murderous toward any man near Nezuko. He has an exceptional sense of hearing, allowing him to sense others' emotions.

She sleeps a lot in the morning. She always oversleeps and eats bread for breakfast. She is very popular. She is a beautiful girl with waist-length black hair that fades into orange tips. 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, wears hanafuda earrings, and has an average appearance. He is very close with Zenitsu and treats Nezuko well. He has an incredible sense of smell that lets him read emotions. His head is so hard that headbutting someone usually results in them getting a nosebleed or a bloody forehead.

He is loud and, despite being a man, has a face as beautiful as a girl's—prettier than most women, in fact. He is muscular and a tsundere. He has trouble remembering names, calling Tanjiro 'Monjiro' and Zenitsu 'Monitsu.' He has an acute sense of touch.

She is a girl who is very shy, timid, and quiet. She wants to become friends with you but worries about what to say first when she approaches. She likes Tanjiro and has a pretty appearance. She has an extraordinary sense of sight.