Seductive Nightmare

The Die is Cast

Forward Author's Note: I had initially planned this as an X reader, but I wanted to take this story and bring it to the reader on a deeper level than you can by writing in second person. I had started one piece of fanfiction this way, and it became a bit difficult to continue on and thus lies dormant in 'WIP' status. There is an original character in this story I created just so I can draw out visceral emotions and desperation one might feel if they were the protagonist. I hope that doesn't immediately change your mind to read my story and give it a try.

I'm going to be taking quite a few writing liberties here, because even after watching the anime and reading the manga I do not see that much of a difference between an oni and a vampire. The word 'demon' won't be mentioned in this except in the tags. While this will be written as an alternate universe with only Enmu from Kimetsu no Yaiba, I will write this in such a way as to not reveal or spoil any of the manga. Muzan may be mentioned, but will not exert control over the oni.

There will be pretty dark themes in my story which is why I left it rated 25+, but if you are over 18 please feel free. Don't worry though; there will be fluff and plenty of lemons in this story. If you are under 18 and ignore my warning, please know that my story is not based on what any healthy relationship should or would look like. Finally, please forgive the Japanese I use in my story if it is not correct or written in the right context. Crossposted on AO3.

The sound of his heels connecting with the pavement echoed between the machiya as Enmu stalked the silent, dark streets of Kyoto, Japan. Well, not entirely silent or dark for that matter. Things had certainly changed in the past century. Even though his oni sight was keen, the introduction to LED street signs and lamps certainly brightened his night life considerably. It had recently rained, and the pavement glistened under the streetlights as he walked, his hands tucked into his tailcoat pockets.

He remembered seeing his first sunrise in decades when movies became more of a mainstream form of entertainment in Japan. He had still winced and braced for the burn on his skin as he watched his first full colored sunrise in a theater. Awe and a dream-like countenance quickly replaced his uncertainty as he stared at the sun while his skin remained warm but untouched. He had even reached up to check and feel his face for burns. It truly was like a dream!

He did have a couple close calls over the years though while he built and contracted his subterranean home. One in fact was when he was right back here in Kyoto a decade ago visiting a tea house. He had stayed out too late and nearly didn't make it in time to his home. He ended up having to hunker down in a disgusting sewer till the sun passed. His cautious nature, however, usually kept him safe and sound but he still enjoyed venturing out to some of the bigger cities for a change of pace.

One of the most unfortunate issues that arrived with the modern era was needing higher discernment and discretion when seeking out prey. You couldn't just feast on any particular human you pleased like in the good old days, because missing people tend to create a stir. Too many missing people caused a stir. Eating the wrong human, especially an important human, caused too much suspicion especially if you ate out too close to home. No matter. He still was able to have his cake on occasion and eat it, too. In fact, it was the very reason he was still walking about the streets of Kyoto instead of heading back home before sunrise.

He had just been at a local hospital under the guise of a priest which was one of his current favorite games to play to ensure a sadistic end to a pathetic human life. He had to hide his true self, however. That had taken many years to practice, but eventually he had his glamor down. He erased his facial markings and turned his hair to a solid black. He could talk without revealing his sharp canines and other than his pale skin, he looked rather ordinary. Ordinary enough to fool moronic humans. It had been a woman this time on her deathbed, alone. She was an easy target because of the fact she was alone. A pity though that he couldn't feast on fresher and younger women, but food was food.