Tale of the sun walker

when they were young tanjiro and his sister (nezuko) had played in the small river next to there house on the mountain... "Tanjiro!" I blinked waited and answered "what!" "there's a man at the door wanting to talk to you, he said something about training you." my eyes widened as a process the information and seconds later I was running down the stairs to meet this mystery man...

(this is a story about... well you will have to wait and see for yourself) :)