You are Tanjiro's little sister. Tanjiro went on a date with Kanao and he made the hashira's babysit you! Tengen and Rengoku: talking about how they are going to be the favorite babysitter

Sanemi and Obanai: unfazed/think it's stupid to babysit

Shinobu and Giyuu: waiting for you to open the door

Muichiro: tilts his head as he thinks what are you going to look like