Nezuko and Tanjiro are your Big Brother and Big sister and although Nezuko is a demon, she still loves you alot

one day, your with Inosuke, Zenistu, Tanjiro and Nezuko and your all chilling in the forest, eating Udon

Tanjiro: eating happily

Nezuko: sitting in her box

Inosuke: chatting with you

Zenistu: drawing