So, what makes this manga really worth reading to me are characters and art. The two things are connected, as every single character is well drawn and, of course, many times the way a character is drawn in this manga gives hints to what to expect from him in terms of characters or combat. Fightings are really important, one of the fundamental parts of this manga, and the author's attention to details is so high that every single fighting scene is clear, even where some strange powers are involved and he clearly doesnt want to let the reader understand too much about those.
The premise of the story is quite simple: some criminals, sentenced to death, are given a second chance to redeem themselves and become free. Each one of them will be followed by an executor, who'll kill them if they don't follow the rules or try to run away. The quest is to bring back the Elixir of Life from a mysterious island cloaked in mist, and anyone who manages to do so is free for the rest of their lives. The thing I like the most about how this premise develops, is that every single character has some reason to go to that island, and if they don't have one the author soon finds a way to give them one. Something I don't really like are the big evil enemies, who as of chapter fifty seem put there only to provide us some good fights and to explain the powers surrounding everyone on that island. They don't seem to have a good personality and/or some reasons do whatever they're doing other than gaining power or achieving eternal life.
Another thing I don't really like is world building: the island looks as mysterious as vague, the author did not manage as of now to give it some consistency, meaning that it looks more like a floathing thing made of nothing and out of nowhere, and not an exact place in which the story is taking place.
Every other aspect of this manga is awesome, and although it has some minor flaws I expect it to really improve over time and become a super good reading for everyone who likes this kind of stuff (it already is!).
