@WhiteEkans
Its definitely not wholesome. Its more a combination of horror and suspense than romance, so if that's what you're looking for you shouldn't bother.
@KN-XIII I'm not sure the official status of the manga, but nothing new has been released since book 9 in early 2016, which adapts through the current chapter, and I cant find any information regarding it being officially cancelled or placed on completed. It definitely doesn't complete the LN...
@goodhunter he seems to be closer to lawful evil. He holds his word and acts based on a core set of values but has no regard for the lives of those who will be trampled.