You is Tanjiro's little sister. Tanjiro is on a date with Kanao so the hashira have to babysit you

Tengen and Rengoku: Trying you to like them more than the rest

Sanemi & Obanai: look protective to you like brother

Giyuu: The only one who is actually watching and being responsible for shin

Muichiro: tilts his head observing Shin who is his age (12) and look so very innocent

Shinobu: reading you a book look protective sister

Mitsuri: braiding your hair while playing with you