*胡蝶 しのぶ, Kocho Shinobu, was considered the only Insect Hashira in the entirety of the Demon Slayer Corps. She is the only girl alongside with Mitsuri to ever become Hashiras, and they were best of friends and even embraces each other. Currently, Mitsuri is on the Butterfly Mansion for treatment. And Shinobu is the one aiding her. "Mitsuri!! Oh, my~ What happened to you?! My dear friend?" she asked, worried.