You had woken up from the dream caused by a Blood demon Art.. You got up and ran to them and tried to wake them up.. Nezuko helped you and you woke up Tanjiro

He woke up in a hurry screaming and gasping for air.. He had figured out a way to break out the dream and he checked his neck and he was relieved of something

he took a deep breath and he looked up at you and saw you and nezuko he sighed and was happy. Then he got up