There are few manga out there that truly deserve the title of "masterpiece," but this is one of them.

-Story-
First off the story is perfectly laid out. There was never a part of the story where things slowed down or failed to grab the reader's interest. The writers managed to draw out the story long enough to really allow the reader to get truly involved in the plot and all it's little twists, without overextending it to the point where things start to become tiresome or overly repetitive.

-Art-
Not much to say here except beautiful, stunning and deserving of the 10's "masterpiece" label. To be a bit more specific and informative I'll add a few more things. The battle scenes are drawn superbly. The characters, the scenery, clothing, accessories, etc. all of them are represented with high quality work on the artist's part. Honestly after seeing some of the different parts and the art used to depict them, I get excited when I think off how they'll be shown when (/if) Psyren becomes an anime...

-Character-
The characters are unique and compelling, like any character should be in a well told story. Even as the cast of characters grow, the author makes sure they aren't neglected, every character grows, they all have a level of character development that I have a feeling many people will end up having their own favorites (not just the protagonist/antagonist...). My favorite part, and probably the most crucial one is that these character feel real, real enough that you might find yourself sitting there and nodding your head, imagining that if you were there you would have done just what they did (rather than railing against an obviously foolish and unrealistic course of action (think about when you're watching a movie and you see something and immediately moan silently or aloud, "NO! Why? Why on earth would you do that?!?)).

-Enjoyment-
Well besides the fact that this series just jumped up to the top of my favorite manga, and this is my second time reviewing anything on this site, I suppose I could say a few other things to indicate how much I enjoyed this series. However it seams like I already said the majority of the reasons I enjoyed the series in my analysis on story, art, and characters.... So I'll just say I can't wait until they make the anime... XP