Some people seem to really miss the mark about this manga so I thought I would put my quick share on why this manga is amazing. Lets get one things straight first, the torture/abuse of immortal humans in this manga is a super small part that is mostly glanced over other than 1 character constantly referencing it to affect is personality. The real meat of this manga comes with the villain Sato who might be the most entertaining villain to watch ever. Ever time the author feeds us some of his backstory it becomes a joyous moment, and his overall dynamic with the main character is really fun to watch. If you are turned off by the comments about the gore side of this manga I would say to mostly ignore them. It really looks like the reviewers complaining about that side stopped at those chapters. But if you want a fantastic action manga with fantastic art and great world building, constantly talking and figuring out the rules of the powers HxH style then Ajin is the manga for you.