Excellent manga, being one of the best I've read.
Eden Endless World is a manga with a dense and cruel story with a very complex and merciless world.
The characters are great. Being very well developed and running away from the simple "bad guy and good guy", but being in the grayer aspects. Each of them (whether Kenji, Sophia, Ennoia or others) has a very well-established presence, personality, character and philosophies of life making them interesting to follow.
The protagonist, Elijah, has an incredible journey through the story. From someone more innocent, to someone who acts on realizing how horrible this world can be: "the world is cruel, I am cruel". On the other hand, the work has such well-established characters that at times it is even doubtful who carries the plot. But he's the one with the greatest focus.
The story is exceptional. Discussing topics ranging from existentialism, faith, discrimination or geopolitics, it is clear how well the author prepared to create his story. Despite being themes that could be boring to see, the author leads them very well through an exciting action plot and incredible fights.
The art is beautiful, but not in the way of a well-detailed setting or characters. What really impresses about this art is the way that the fight choreographies or the action scenes are so well conducted within the work, especially when Kenji is shown starring in some of the best fights of all manga in general.
Finally, Eden endless Worl is an amazing manga with a great story and characters and having an excellent ending that speaks perfectly with everything that there is work had presented. If I had to criticize something, the manga unfortunately ends.