Please Find the Author of This Book

The copywriting is to be determined, but the core plot lies in the title. To put it simply, it is a horror (bushi) cookie who falls in love in a horror novel O(∩_∩)O cp: The unlucky little fairy vs. The big bad guy who may be a ghost/vampire/little monster... Concept: The truth seen with the naked eye may be false. We must see through the phenomenon to see the essence.