If you want to have murderous thoughts and to become a psychopath, read it. I don't even remember the number of times I thought in my head "just kill him and it's over". Fuck, all of them merit to die. I'm so angry at them it's incredible.
It's like a vengeance story but you are waiting forever...
I gave it a 10, for multiple reasons :
1. It's clearly underrated
2. There is no cringe
3. There is no artificial difficulties made up by the author
4. Characters are likeable
5. It is a calm and pleasant journey for the reader : you do not read much of those mangas in which there is nothing but...
Seems like another one of those MC who want revenge, justice etc but without killing anyone. Like, you are a psycho buuuuut.... Fuck it, prefer rooftop sword master, at least he is trying to get TRUE revenge, through blood and guts.