backstory (Y/N 13 year old POV)

Rengoku is your mentor/teacher, he trains you for the finale selection. Will you make it? What will happened when you run into on of the hashiras little brother? You and Rengoku have a pretty good relationship together;) but what happens when you meet wind?

ALSO I DONT OWN ANY OF THE KNY CHARACTERS OR THAT HOT PIC OF SANEMI
AND I MIGHT MAKE THIS RENGOKU X READER TOO IDK YET