I would not recommend to watch. But,
Redo of the Healer ( Kaifuku Jutsushi no Yarinaoshi ) or simply Kaiyari, is the anime adaptation of the original light novel of the same name. As a dark fantasy anime lover as myself find this anime very much pleasing. But this anime has some graphical scenes that a normal viewer would throw up. This anime has received more controversial news than any anime that airing this season except for Attack on Titan.
This anime has Dark fantasy, Ecchi and Harem as its genres. So it is not a anime that a normal viewer would like to watch. And also this anime has passed all of the 18+ even Ishizoku Reviewers that was aired last year. This anime has a total ratings of 6.38 in my anime list . To be fair, compared to most Hentai, even this anime is fairly tame. But with the production values of a standard anime, and a full story, it’s fairly entertaining, but to be fair this show is actually pretty mild all things considered, but this time with decent art and passable animation quality.
As goes for the plot, we have our main character Keyaru, a healing hero that seeks for revenge for using him for to heal and not just regular healing that we seen in other animes. They rape him for his fluids to get it. This was all because of the main heroine Princess Flare, she treated him like a dog and addict him to drugs for loosing his mind by healing everyone in the castle. By seeing how this going this seems like a it is an anime like hell. But, Keyaru defeated the Demon Lord and he wished to redo everything, start again and get revenge from everyone.
As this how it goes even I felt some satisfaction from even looking how he get revenge from everyone that ruined him. Even though he is a bad guy I think that he must get his revenge as much as he wants.
Also I need to say that this just what I personally think. And everyone has their opinion when it comes to this. I would not recommend this to watch but if you’re interested you should watch it.