Sooo.... I just finished this series like a few minutes ago.
It was incredibly intense~!
I loved it, even though it didn't seem like something that really fit my style. So even if you're not into the whole "what happens in the future" thing, you should at least try it ^^
It was surprising. There were some things that I totally wasn't expecting. AT ALL. But that made it so much more enjoyable :D After all, nobody likes a predicable story ne?
Also, despite it being mainly action, there were some sentimental moments. Those moments that just make you cry. (kinda... ^^;;)
You could get pretty attached to the characters (if you're like me and obsess over them ^^;;)

So anyway, I didn't give it 10/10 for a reason. It wasn't the ABSOLUTE BEST manga I've ever read, but it came pretty close but I can't go into decimals.