Mine started out with me getting a promt that goes with "A giraffe gave me a knife and told me to kill people" and that's how it began.
The lore of my story revolves around reapers going back into the earth to hunt the spirits bounded by their desire to live to set them free. In this story, all grimp reapers are people who died of suicide and their ability is based upon their cause of death or the reason why they killed themselves. It's just a "fun slice of life" filled with terrible people doing terrible things.
If you're interested, you could check them here.