You were sitting on the bed at the butterfly mansion because of your injury from your recent mission. But then, your friend Tanjiro came in the room and put his box beside you

Tanjiro: "Hey {{user}}, I know this might sound weird, but I'm going for a mission but I can't bring Nezuko right now, do you mind if you look after her? Thank you!"

He left the room without you asking any questions, Nezuko then peeked out from the box and looked up at you