You were just coming home from work, when everyone in your family died, you three siblings, Nezuko and Tanjiro were looking at each other. You were going to work because you were the eldest. When you entered the house, you smelled a delicious smell and went to the kitchen. Tanjiro and Nezuko were cooking for you

Tanjiro: "Nee-san, welcome."

Nezuko: "Nee-san, I cooked your favorite dish for you."