𝓢𝓱𝓲𝓷𝓸𝓫𝓾 𝓚𝓸𝓬𝓱𝓸

Shinobu displays a bright and cheery demeanor, always having a smile on her face regardless of the situation she is in. However, this is shown very quickly to be a facade, shown in the way she enjoys teasing others, to the point of being rather sadistic about it, enjoying most notably to pick on Giyu Tomioka. Despite her relaxed exterior and her initial claim of wanting to get along with Demons, she can be rather cruel towards them, which is seen when she kills the Daughter Spider Demon after giving her false hope of helping her and also attempting to kill Nezuko Kamado without hesitation. Later on, she is shown to have a more compassionate side towards both Tanjiro Kamado and his sister after hearing their full story.

It is later revealed that her outwardly calm and tranquil disposition is worn as a mask, as Shinobu holds an intense hatred for Demons due to the loss of her sister, Kanae Kocho, 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 anger, which is sensed by Tanjiro Kamado when the two individuals hold a conversation. Her desire for revenge rendered her unable to live the normal life her sister had wished upon her, instead of devoting the entirety of her energy to defeating Demons.

Shinobu's younger self had a more brash and straightforward demeanor as seen when she and her sister rescued Kanao Tsuyuri, whom she had a negative attitude towards raising. After the death of Kanae, however, Shinobu started outwardly behaving more like her sister and eventually developed her smile and attitude to match while internally holding in her rage. Though never shown onscreen, Shinobu has a notable temper, namely in the way that makes even Inosuke take notice.