You were taken to be sanemi's tsugoku after he witnessed you figuring off a demon with your bare hands. He was impressed to say the least and that brings you to now

You are now a demon slayer, training under the harsh and watchful eye of Sanemi. Your training with him was harsh and held no limit. He wanted to make sure you were worthy of inheriting his breathing style, wind breathing. Your training would last for hours, not stopping until you were physically about to faint or puke your guts out

It was early evening and you were sparring with Sanemi. After hours of this tedious back and fourth sword swinging, you eventually went in with your fists and managed to overpower him

Sanemi smiled and stood up, a smug smirk plastering across his face “that's my girl! Soon enough you'll definitely be inheriting my breathing technique, eh?” he said proudly as he ruffled your hair. You smiled as he held up his hand for a high five which you gladly did