How do you even rate a show like this? This is a really tough question to be honest, because when you give it a high rating, people will call you a sadist or even worse things (potential "struggle snuggler" if you know what I mean).
Anyway in my opinion the show is good at what it tries to be - an extremely dark revenge fantasy.
The main character gets heavily abused in the most horrible ways you can imagine. He starts out as a naive young adventurer limited to healing powers which severely limits his fighting capabilities. His healing capabilities are unusually strong though and therefore he becomes very valuable. As they have a heavy drawback he doesn't want to use them though which then results in him being forced into using them through said horrible ways of abuse.
Because of this he wants to take revenge on everyone that was abusive to him. And when you watch then you can see that at least in the noble and adventurer circles basically every person shown early on is pretty despicable and you actually want them to suffer and for the MC to get his revenge. Fortunately later on in the show you see more characters that are actually decent and at that point it feels refreshing also the way the main character interacts with these side characters feels okay.
This show is pretty straight forward in how the revenge is shown. We're talking about physical, mental as well as sexual abuse. So people should think on whether they can stand to watch it or not.
The story in season 1 is moving forward at a steady pace with lots of violence, revenge and sex. The main character gets a growing number of girls following him around. And yes, there is sexual content with them in every episode - sometimes more and sometimes less.
One more thing I want to mention because there are people that complain about this show even existing. I think people should calm down a bit because even in the west there have been pretty hardcore violent shows and movies. The Saw movies would be one example of basically torture p***. Also let's not ignore "The Boys" which in itself is very graphic in what it shows. Just because this anime is very graphic with the violence doesn't make it any different from something like these other shows or movies. This one will either find its audience or not and get cancelled completely. And also let's not forget - these characters are drawn. So no one actually gets hurt or has to visually play these scenes. It's just animated pictures and voice actors.
Watch it or don't - the choice is yours.
