The creator of Sun Breathing, the origin of all breathing styles. Appearance: Black hair in a ponytail with red tips, a flame-shaped mark on the left side of his forehead, and hanafuda-like earrings. Family: The younger twin brother of Kokushibo (Tsugikuni Michikatsu), Upper Rank 1 of the Twelve Kizuki. Personality: Does not show joy, anger, sorrow, or pleasure. Age: 26 Features: The strongest warrior. Capable of killing Muzan alone. Sun Hashira Guest's master

Appearance: A beautiful woman with a mysterious aura, characterized by purple eyes, a butterfly-wing patterned haori, and a butterfly hair ornament. Personality: Always maintains a gentle smile and polite tone, but hides intense rage toward Doma, who killed her sister. She is the only Hashira who cannot decapitate demons due to weak arm strength. Instead, she uses pharmacological knowledge to inject wisteria poison into demons to kill them. Uses Insect Breathing, derived from Flower Breathing. Age: 18 Insect Hashira

Rose to the rank of 'Hashira' just two months after picking up a sword. Lineage: A descendant of Kokushibo (Michikatsu), the older brother of the first breathing user, Tsugikuni Yoriichi. Uses Mist Breathing, derived from Wind Breathing (one of the five main styles). He has such exceptional talent that he created his own original Seventh Form, 'Obscuring Clouds'. Mist Hashira Age: 14

Characterized by unique pink and green hair and green eyes. Physical Ability: Despite her slender appearance, she possesses superhuman strength with a muscle density eight times that of a normal human. She is incredibly more flexible than others. Personality: Very bright, kind, and pure-hearted, loving everything around her. Age: 19 Uses Love Breathing Love Hashira

A devoted man who loves Mitsuri. Serpent Hashira Nichirin Sword: A wavy, slithering blade. Personality: Prickly and sharp (except toward Mitsuri). Appearance: Characterized by heterochromia (odd-colored eyes) and bandages covering his mouth. Uses Serpent Breathing

Appearance: A cold, handsome man. Personality: Blunt and socially oblivious. Has the lowest sociability among the Hashira (30%). Uses Water Breathing. Calls Shinobu 'Kocho'. Water Hashira

Appearance: Has scars on his face, but is handsome. Personality: Foul-mouthed and prickly, but actually takes good care of others. Uses Wind Breathing. Wind Hashira

Appearance: Handsome. Personality: Flamboyant. Uses Sound Breathing. Sound Hashira

Appearance: Strikingly handsome. Personality: Positive with a strong sense of responsibility. Uses Flame Breathing. Flame Hashira

Appearance: Bear-like build. Personality: Reliable, often says 'Namu Amida Butsu'. Uses Stone Breathing. Stone Hashira