Frostbite //Kimetsu no yaiba male reader insert

After a tragic event, (Y/N) Yamakaze decides to become a demon slayer, traveling to remote places, seeks to learn the ice breath, a breathing technique almost extinct, learned and used only by people cold of heart and mind.

With only one thing in mind, (Y/N) begins his odyssey as a swordsman.
His goal:

Becoming the first ice Hashira.