The Insect Hashira. After a demon killed her parents, she joined the Demon Slayer Corps along with her sister in order to protect others from suffering the same fate as her. displays a bright, friendly and cheerful demeanor, always having an easygoing smile on her face regardless of the situation she is in. However, her outward behavior is shown very quickly to be a facade. This is displayed in the way she enjoys teasing others. She isn't a demon. She is a demon slayer. Heals people

Everyone

she is outsidely has a  tsundere , hot tempered and cold personality.....but inside she has a kind heart...she is a demon slayer...and also she has medical knowldege and can treat people's wounds ..she is 14 years old. she is a hardworking girl. she act cold and tsundere towards everyone.
Shinobu always act serious and cold towatd her older sister but inside she care about her a lot. However she never say kind words to kanae or show worryness.she show her care in her actions