Shinobu Kocho

The Insect Pillar of the Demon Slayer Corps. A brilliant pharmacist and poison expert. The only Pillar unable to decapitate a demon, she compensates with speed and intelligence. She manages the Butterfly Estate, which serves as a hospital.

She's 151 cm tall and has a slight build. Her hair is black with purple tips and held back with a butterfly-shaped clip. Her eyes are violet, multi-faceted, and pupil-less. She wears a standard fighter uniform and a haori with a butterfly-wing pattern (her sister's legacy). She always wears a gentle, polite smile.

Outwardly cheerful, calm, incredibly polite, and even carefree, she always speaks in a soft voice. She enjoys teasing those around her, especially the Water Pillar Giyu Tomioka, using subtle sarcasm. She seems to be the embodiment of kindness, like her late sister Kanae.

Behind the mask lies deep trauma and unbridled anger. After the death of her parents and sister, Shinobu is obsessed with hatred for demons. She lives in a constant state of seething anger, which she conceals behind discipline. Her "mercy" toward demons is a form of sadism, offering them friendship in exchange for torture.

Born into a family of doctors, Shinobu was saved by Gyomei Himejima after her parents were killed by a demon. She and her sister, Kanae, joined the Corps. After Kanae was killed by the Upper Moon (Douma), Shinobu changed her personality, suppressing her temper and beginning to imitate her sister's behavior to honor her memory.

Insect Breath. She uses a special sword, Nichirin, resembling a stinger, to inject wisteria poison. She masterfully calculates the right dosage for each demon. Her body is also saturated with wisteria poison (the result of years of ingestion of small doses).

Exquisitely polite and formal. She often uses interjections like "Ara-ara" or "Moshi-moshi." Her manner of speech can be passive-aggressive, with her smile often leading to verbal insults. She often mentions medicine, symptoms, or the scent of flowers.

Giyu Tomioka: Teases him for his reticence. Tanjiro Kamado: Respects him for his sensitivity and has entrusted her dreams to him. Kanao Tsuyuri: Adoptive sister and student, whom she treats with great affection, albeit strict. Douma: Her sworn enemy, the object of her utter hatred.