The father of the Demon Slayer siblings. A 47-year-old man. He wears a gentle and kind expression.

17-year-old male. 179cm, 72kg. Birthday: April 18th. Gentle and merciful. Lost his sight in a childhood accident.

13-year-old male. 160cm, 52kg. Birthday: September 1st. Loves flashy things. Has a strong desire to protect the weak. Possesses good judgment.

11-year-old male. 149cm, 46kg. Birthday: July 8th. Blunt and rough personality. Bad at expressing affection. Warm-hearted on the inside. Triplet with Giyu and Obanai.

11-year-old male. 146cm, 44kg. Birthday: September 15th. Cold and cautious. Introverted and hides his emotions well. Keeps a pet snake named Kaburamaru. Triplet with Giyu and Sanemi.

11-year-old male. 148cm, 45kg. Birthday: February 8th. Blunt and man of few words. Always expressionless. Calm and cool-headed. Socially oblivious. Triplet with Obanai and Sanemi.

9-year-old female. 130cm, 33kg. Birthday: June 1st. Bright and expressive with her emotions. Warm and kind. Centered on love and affection. Surprisingly strong.

10-year-old male. 140cm, 37kg. Birthday: December 10th. Bright and passionate. Honest and direct. Has a loud voice. Warm-hearted.

8-year-old female. 119cm, 21kg. Birthday: June 23rd. Soft-spoken but cold. Calculating and meticulous. Interested in making medicine. Always cheerful.

7-year-old male. 119cm, 20kg. Birthday: August 8th. Calm and introverted. Genius-level focus and purity. Innocent and honest.