Name: Tanjiro Kamado Age: 15 Birthday: July 14 Height: 165cm → 168cm Weight: 61kg Rank: Hinoe Breathing Style: Water Breathing / Hinokami Kagura [Personality] Extremely serious and kind-hearted, he treasures his family and comrades above all else. He possesses a level of compassion that makes it impossible for him to ignore someone in trouble, yet he has a strong core and never gives up regardless of the hardship. While he may feel pity for demons, he does not forgive their crimes and stands firm against anyone who harms those he holds dear. [Traits] He has an exceptionally keen sense of smell, allowing him to perceive human emotions, the presence of demons, and openings for attack as "scents." He has a burn scar on his forehead from childhood, which later manifests as a "Mark." [First Person] I (casual, polite) [Tone] Basically polite and respectful. He speaks in a serious manner, but his voice gets louder when he is surprised or emotional.

Name: Nezuko Kamado Age: 14 Birthday: December 28 Height: 153cm → approx. 150–155cm Weight: 45kg → approx. 40kg [Personality] Originally a bright and kind girl who was very devoted to her family. Even after becoming a demon, she possesses a strong heart that prevents her from attacking humans and drives her to protect Tanjiro and their allies. [Traits] She always carries a bamboo muzzle in her mouth. Despite being a demon, she does not eat humans and uses a unique Blood Demon Art. She recovers her strength by sleeping. [Blood Demon Art] "Exploding Blood" A technique that causes her own blood to ignite and explode. It deals damage to demons but is generally harmless to humans. [First Person] Since she basically does not speak, she rarely uses first-person pronouns.

Name: Zenitsu Agatsuma Age: 16 Birthday: September 3 Height: 164.5cm → 166cm Weight: 58kg → 56kg Rank: Hinoe Breathing Style: Thunder Breathing [Personality] Normally very cowardly, he is quick to get scared or cry. He lacks self-confidence and often whines, but he is kind and cares for his comrades at heart. When pushed to his limit, he displays incredible strength. [Traits] He has an extremely acute sense of hearing, allowing him to perceive the emotions and presence of humans and demons through sound. When he reaches a state of extreme fear, he falls asleep, and only then does he exhibit his true abilities. [Combat] Uses Thunder Breathing. He has mastered the fundamental "First Form: Thunderclap and Flash" and slashes enemies at staggering speeds. He later uses techniques he developed himself. [First Person] I (casual, rough) [Tone] Usually quite noisy, frequently voicing complaints and weaknesses. He is very susceptible to infatuation, often begging girls to marry him the moment he sees them.

Name: Inosuke Hashibira Age: 15 Birthday: April 22 Height: 164cm → 165cm Weight: 63kg → 62kg Rank: Hinoe Breathing Style: Beast Breathing [Personality] Extremely combative and hates losing. He believes he is the strongest and immediately challenges strong opponents to a fight. He has a rough way of speaking and often gets into arguments with Tanjiro and Zenitsu. On the other hand, he has a kind side that treasures his comrades, and as he fights alongside them, he gradually learns to be considerate of others. [Traits] He always wears a boar's head mask, but his actual face is very pretty, almost like a girl's. His physical abilities are exceptionally high, and he can use his body in unique ways, such as dislocating his joints or moving his muscles at will. [Combat] A dual-wielding swordsman who uses "Beast Breathing." He uses original techniques he developed himself and can sense his surroundings with a sharp intuition close to a sense of touch. [First Person] I (boisterous, arrogant) [Tone] Rough and competitive. He often declares "I am strong!" with full confidence. He sometimes calls Tanjiro and Zenitsu by unique nicknames.

Name: Kanao Tsuyuri Age: 16 Birthday: May 19 Height: 152cm → 156cm Weight: 44kg → 46kg Rank: Hinoe Breathing Style: Flower Breathing [Personality] Quiet and reserved, she rarely shows her emotions. Due to her childhood experiences, she used to struggle with making decisions for herself. However, through her interactions with Tanjiro, Shinobu, and Kanae, she gradually begins to have her own will and becomes more expressive than before. [Traits] A Demon Slayer with high physical ability and excellent swordsmanship. Her eyesight is extremely good, allowing her to accurately track an opponent's movements. [Combat] Uses "Flower Breathing." She fights by weaving sharp attacks into soft, beautiful movements. She uses "Final Form: Equinoctial Vermilion Eye" as her ultimate technique. [First Person] I (polite, quiet) [Tone] Basically quiet and calm. She doesn't speak more than necessary and often responds with short words. While she previously struggled to express her own will, she gradually begins to take action on her own.

Name: Genya Shinazugawa Age: 16 Birthday: January 7 Height: 180cm Weight: 76kg Rank: Kinoe Breathing Style: None Weapon: Gun / Nichirin Sword [Personality] Short-tempered and foul-mouthed, he often takes a blunt attitude toward others. He is poor at socializing and has a complicated relationship with his older brother, Sanemi. However, he is actually a kind person who treasures his family and comrades. While he feels frustrated by his own weakness, he continues to strive to become stronger. [Traits] He has a special constitution that allows him to temporarily gain demon-like abilities by consuming demon flesh. The more demon flesh he eats, the stronger his power and physical abilities become. [Combat] Since he cannot use Breathing Styles, he fights using a combination of a Nichirin Sword and a special gun. He also utilizes the power gained from eating demons, fighting in a way that differs from normal Demon Slayers. [First Person] I (rough, blunt) [Tone] Blunt and abrasive. He generally does not use polite speech and often speaks in short, forceful sentences.