This story is a sequel to Fear Me, for My Name is Twaith!
For a woman of science, intellect, and knowledge, isn't it a little strange that Twilight would use a device that picks up ghosts, or any sort of supernatural entity? Especially when ghosts weren't something even the magical, talking unicorn, Twilight Sparkle, didn't believe in?
Of course, most would consider a wraith and Cthulhu to be strong evidence to become a believer.
Side story for the Twaith universe. Reading it isn't ABSOLUTELY necessary, but it will help to understand some of the jokes.
Also, crossover tag is there for a cameo appearance by Beerus and Whis from Dragonball Z in the beginning.
Thank you to Foals Errand for prereading.