My God You're Divine (KNY!various x isekai!reader)
Since spawning into your favorite anime Demon Slayer, you have a very clear agenda. 1.) Save your favorite characters 2.) Come up with a kickass breathing style 3.) Create your own harem AS much as you thought your third idea would just be a funny joke, you soon realize that maybe it wasn't as far fetched as you thought.
This is also published on Quotev