This is certainly a very positive novel. It gives the first impression of being an edgy revenge novel, but that's just bait, and turns into a much more positive story as it goes, and by positive I mean that he truly values life of those around him, without exceptions. This is not a story of an MC detached to the world that has no worries nor weakness in his personal connections. They are also not "throwaway" allies.
When I first found about it, I read the summary and gave up instantly, once I started reading after giving it a chance, I felt that the summary is pretty bad in explaining what the story is about.