the supernatural hunter (human male reader x Loona)+18

Years ago, before Blitzo adopted Loona, I.M.P was hired by a salty client to kill Y/N's parents when Y/N was just 10 years old. I.M.P completed the job, unknowingly leaving Y/N an orphan. Over the years, Y/N developed a deep hatred for demons and eventually became a famous supernatural Hunter. After many years, Y/N crosses paths with I.M.P again and seeks revenge.