Suicide is a topic that, while included in narrative quite often, is not often the focus. Those few times when it is, more often than not, the story follows the character in the events leading up to their suicide rather than what happens to the character after. And honestly, most of the time when the focus IS on what happens after the suicide, it is not well done. This is one of those cases.

To be fair, this manga is actually quite interesting. The events that the protagonist goes through in his own little Purgatory are surprising and at times exciting and it does a pretty good job of holding its readers' interest. As well, the art, though nothing special, is consistently good. The characters, for the most part, are quite flat at trope-ish, but that's quite normal in this kind of manga.

The problem I have with this series is a problem I have as someone who has dealt with suicidal ideation for the majority of my life and has helped other people work through their own suicidal thoughts. Because this series focuses on how much OTHERS are negatively affected by someone's suicide which, as most people who have been suicidal can tell you, is not as original one might think and is very much not a good thing for suicidal people to see.

Suicidal people KNOW that their potential suicide will have a negative affect on others, it's not something we're completely oblivious to, and trying to write a narrative of "LOOK AT WHAT YOU'VE DONE WITH YOUR SELFISH ACTION" honestly comes across as very ignorant of what people experiencing depression go through. The idea of having to "redeem" yourself after suicide is harmful and tired and works more towards further guilting people going through an extremely painful mental illness rather than taking any steps to try to help them. This takes an even bigger step down as the story focuses on the protagonist having to try to save people who abused him and directly lead to his suicide.

To summarize, Rengoku no Karma is interesting but, as a suicide survivor, it leaves a very bitter taste in my mouth.