Figure | Demon Slayer: Kimetsu no Yaiba | Shinobu Kocho | Banpresto v. 40

Shinobu Kocho is a major supporting character of Demon Slayer: Kimetsu no Yaiba. She is a Demon Slayer of the Demon Slayer Corps and the current Insect Hashira.

Shinobu is rather laid-back, always having a smile on her face regardless of the situation she is in. She seems to enjoy teasing others and can be rather sadistic about it, enjoying most notably to pick on Giyu Tomioka. Being a Hashira of the Demon Slayer Corps, Shinobu is one of the most powerful and skilled swordsmen in the entire organization.

Shinobu is also the younger sister of Kanae Kocho along with her adoptive younger sister Kanao Tsuyuri. After a demon killed her parents, Shinobu joined the Demon Slayer Corps along with her sister in order to protect others from suffering the same fate as her.

Demon Slayer: Kimetsu no Yaiba  (from Kimetsu no Yaiba Wiki)
Demon Slayer: Kimetsu no Yaiba (lit. "Blade of Demon Destruction") is a manga series written and illustrated by Koyoharu Gotoge. It has been serialized in Weekly Shonen Jump since February 15, 2016. The series is republished in English by Viz Media. The series officially ended on May 18, 2020 (Weekly Shonen Jump Issue #24) with a total of 205 chapters.

STORY: In Taisho-era Japan, Tanjiro Kamado is a kindhearted boy who makes a living selling charcoal. However, his peaceful life is shattered when a Demon slaughters his entire family. His little sister Nezuko is the only survivor, but she has been transformed into a Demon herself! Tanjiro sets out on a dangerous journey to find a way to return his sister to normal and destroy the Demon who ruined his life.

(from Kimetsu no Yaiba Wiki)