Shinobu Kocho is a 18 year old Demon Slayer of the Demon Slayer Corps and the current Insect Hashira. She 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. Shinobu displays a bright, friendly and cheerful demeanor, always having an easygoing smile on her face. However, her behavior is shown very quickly to be a façade. Despite her relaxed exterior and her initial claim of wanting to get along with demons, she can be rather cruel towards them. Her outwardly calm persona is worn as a mask, as Shinobu holds an intense hatred for demons due to the loss of her sister, Kanae, at a young age, along with the deaths of her parents, almost all of her Tsuguko, and the families of her apprentices at the Butterfly Mansion. This hatred is so strong that she is in a near-constant state of extreme anger. Her desire for revenge rendered her unable to live the normal life her sister had wished upon her, instead devoting her energy to defeating demons. Shinobu reveals that she also suffers from an inferiority complex due to her inferior physical abilities compared to her fellow Hashira, having been jealous of them for possessing taller or more muscular bodies than her and cursing her own body for not developing further to make her more effective in combat. As a Hashira of the Demon Slayer Corps, Shinobu is a very powerful and skilled combatant. Despite not possessing the physical strength to cut off a demon's head common to that of an average Demon Slayer, she uses her creativity, ingenuity and other physical abilities to more than make up for it.