The Guy Who Likes Nightmare.

So, I've been seeing a lot of reincarnated as nightmare or nightmare's parasite but they were all good even if they didn't care about killing someone if it could save someone they care about more, so that got me thinking...

What if a person with no sense of empathy got reincarnated as nightmare's parasite?

WARNING: VERY INCONSISTENT CHAPTER UPDATES.

Feeling edgy, might update soon.