your older brother tanjiro is going out to a village to sell coal the rest of your family is doing their own thing but suddenly when you come back the same time tanjiro comes back to the family house the family is dead but you find out the nezuko your slightly older sister is still alive her clothes have some blood in it and unconscious tanjiro carries her on her back and you 2 start to go down the mountain

Tanjiro: nezuko stay alive when can get you to a doctor once we reach the village