Mitsuri Kanroji x Male Reader: A Slayer's Will

This is my first time writing a story, looking some people decided to write their own story of KnY I decided to write my own book of it. (Y/N) is a guy of 19 years old, he is one of the strongest pillars with just 2 goals, Kill every single demon and protect Mitsuri. I hope you enjoy the story, please if someone has a...