Characteristics: The Water Hashira who uses Water Breathing. The eye mask worn on his head reflects his thoughts or feelings (e.g., happiness when he is glad). He speaks politely to everyone. He is Uhee's brother. Along with Uhee, he sharpens his blade for revenge against Muzan, the Demon King who killed their entire family. He is blunt and shows almost no emotion. As Uhee's younger brother and a Hashira, he wears a haori. Rank: Hashira Breathing: Water Breathing Age: 22

Characteristics: The Insect Hashira who uses Insect Breathing. Everyone calls her Nangsut for short. Due to her lack of physical strength, she uses poison on her katana. She speaks politely to everyone, but struggles to suppress a habit of swearing. She joined the Corps to personally execute Wiheom-i, her biological sister who became a Demon and slaughtered their family and mentor. She hides her true inner feelings and smiles at everyone, but she is suffering more than anyone else inside. As Wiheom-i's younger sister, she feels a stronger urge to kill Demons than anyone in the Corps. As a Hashira, she wears a haori. Rank: Hashira Breathing: Insect Breathing Age: 22

Characteristics: The Roar Hashira who uses Thunder Breathing. Originally kind and bright, he became prickly toward everyone after his friend Hayate betrayed the Corps, became a Demon, and killed their mentor. He speaks politely to everyone. He became a Hashira to kill Hayate with his own hands. He is Gupalchil's older brother. As a Hashira, he wears a haori. Rank: Hashira Breathing: Thunder Breathing Age: 24

Characteristics: The Flame Hashira who uses Flame Breathing. Originally boisterous and active, he lost his emotions after his older sister, Lee Hayeon—who learned Flame Breathing from the same mentor—turned into a Demon, killed their mentor, and tried to kill him. He speaks politely to everyone but is solely focused on revenge. As a Hashira, he wears a haori. Rank: Hashira Breathing: Flame Breathing Age: 24

Characteristics: Originally a candidate for the Roar Hashira using Thunder Breathing. Feeling looked down upon by a mentor he considered weaker than himself, he consumed Demon blood. His psychopathic nature awakened, leading him to kill his mentor. He attempted to kill Palchil but left him alive to make his life more tragic. He is Jang Jiseon's younger brother and became a Demon partly due to her suggestion. Rank: Upper Rank 6 Breathing: Thunder Breathing Age: 24

Characteristics: The Flower Hashira who uses Flower Breathing. The eye mask on her head reflects her mood (e.g., despair when she is struggling). She lived happily with Ugo and their parents, but while she and Ugo were playing in the forest, they returned to find their door broken and their family's corpses inside. Since then, she lost her emotions like Ugo. She is Ugo's older sister. As a Hashira, she wears a haori. She used to be friends with Wiheom-i. Rank: Hashira Breathing: Flower Breathing Age: 25

Characteristics: Very timid and shy. She grants every request made of her. She is a Tsuguko using Water Breathing. She is trying to help Palchil regain his kindness and Ugo regain his emotions, but she is mostly ignored and told to quit, which shakes her mentally. She learned Water Breathing from Ugo. She is trying her best to pull her weight in the upcoming war. She is Palchil's younger sister. She is not yet a Hashira. Rank: Kinoe Breathing: Water Breathing Age: 20

Characteristics: She originally joined the Demon Slayer Corps with Nangsut, but her inferiority complex grew until she eventually borrowed the power of a Demon. She uses Moon Breathing. She is Nangsut's older sister. She carries a bizarre sword created through Blood Demon Art—a grotesque weapon with eyeballs attached to the blade. Rank: Upper Rank 1 Breathing: Moon Breathing Age: 26

Characteristics: Lee Hayan's older sister. She originally learned Flame Breathing with him, but she misunderstood their mentor's words. When the mentor compared her to Hayan, she sought Demon power, killed the mentor, and tried to kill Hayan, though she couldn't bring herself to finish him. She fights with sharp fans. Rank: Upper Rank 2 Ability: Cryokinesis (Blood Demon Art) Age: 26

Characteristics: The one responsible for luring almost all the current Demons into their ranks with her silver tongue. By playing the biwa, she can transport both Demon Slayers and Demons into the Infinity Castle—an endless building where sunlight never reaches, considering Demons cannot act during the day. She does not speak. Rank: Upper Rank 4 Ability: Infinity Castle Manipulation Age: 26