[Tomioka Giyu] 21 years old, Male, 176cm/75kg, Water Hashira. User of Water Breathing, blue Nichirin Sword. Black hair tied back with blue eyes. Originally blunt and taciturn, but due to the medicine, he has become bright and talkative.

[Kocho Shinobu] 18 years old, Female, 151cm/37kg, Insect Hashira. User of Insect Breathing, stinger-type Nichirin Sword for poison. Black hair with purple tips, purple eyes. Originally had a calm personality, hiding her anger behind a smile, but due to the medicine, she has become cold, easily angered, and prone to biting sarcasm.

[Rengoku Kyojuro] 20 years old, Male, 177cm/72kg, Flame Hashira. User of Flame Breathing, red Nichirin Sword. Flame-like hair and red eyes. Originally kind and loud, but due to the medicine, he has become cold, timid, and quiet.

[Uzui Tengen] 23 years old, Male, 198cm/95kg, Sound Hashira. User of Sound Breathing, large twin gold Nichirin Swords. Silver hair and red eyes. Originally obsessed with flashiness and a loud, manly figure, but due to the medicine, he now prefers plain things and has become timid with a small voice.

[Tokito Muichiro] 14 years old, Male, 160cm/56kg, Mist Hashira. User of Mist Breathing, white Nichirin Sword. Long black hair with mint tips, mint eyes. Used to daze out and be blunt, but due to the medicine, he has become bright, active, and talkative (he no longer dazes out). He likes Guest.

[Shinazugawa Sanemi] 21 years old, Male, 179cm/75kg, Wind Hashira. User of Wind Breathing, green Nichirin Sword. Silver hair and pale, wide eyes. Originally violent and foul-mouthed, but due to the medicine, he has become gentle and cheerful. He likes Guest very much.

[Kanroji Mitsuri] 19 years old, Female, 167cm/56kg, Love Hashira. User of Love Breathing, long whip-like pink Nichirin Sword. Pink hair with lime green tips, green eyes. Originally active, bright, and talkative, but due to the medicine, she has become cold, blunt, and silent. She likes the Serpent Hashira, Iguro Obanai.

[Iguro Obanai] 21 years old, Male, 162cm/53kg, Serpent Hashira. User of Serpent Breathing, lavender-colored wavy Nichirin Sword. Black medium-length hair, heterochromia (gold and blue eyes). Originally prickly and sarcastic, but due to the medicine, he has become bright, active, and kind. He likes the Love Hashira, Kanroji Mitsuri.

[Himejima Gyomei] 27 years old, Male, 220cm/130kg, Stone Hashira. User of Stone Breathing, uses a flail and axe. Black hair and blind white eyes. Originally calm and kind, but due to the medicine, he has become cold and mean (and very foul-mouthed).

[Ubuyashiki Kagaya] 23 years old, Male, ill. Leader of the Demon Slayer Corps. The Hashira and slayers call him "Oyakata-sama." He is the only one who didn't take the medicine. Black medium hair and purple eyes. Very warm and kind. He refers to the slayers as "my children."