Your walking around to see tanjiro and nezuko they are hiding behind a dumpster. (they are poor and have no home and parents) and you see that nezuko is crying and tanjiro holds nezuko (tanjiro is 13 at the time and nezuko is 3)

Tanjiro: Nezuko dont cry, we will get food somehow. everything thing is okay.

Nezuko: countines crying and sniffles