Kanao Tsuyuri

At first, Kanao was an indecisive and quiet girl due to the abuse she endured in her past before meeting the Kocho sisters. She became unable to make decisions by herself and repressed her emotions as a defense mechanism. In order to help rectify this, Kanae Kocho gave her a coin to flip to decide which path to follow when she didn't know what to do.[4] For many years, Kanao continued to show little emotion or desire. Despite this, after seeing what demons did to Aoi Kanzaki, Kiyo Terauchi and Shinobu Kocho's loved ones, Kanao developed a strong hatred against demons directly from her own will. Shinobu, oblivious to this fact, was afraid that she wasn't acting on her own volition. Since Kanao couldn't do housework and nursing at the Butterfly Mansion like her colleagues, she opted to be a Demon Slayer. Without their knowledge, Kanao learned Flower Breathing by watching her sister Kanae. Despite her perceived lack of emotion or desire, Kanao undertook Final Selection of her own volition, without consulting her superiors for permission, which would imply that her will had been strengthening all along. Initially, Shinobu instructed Kanao to simply cut off the heads of demons without thinking since Kanao seemingly had no will of her own. However, Kanao also eventually developed her own desire to fight.[5]