This is hands-down the best sci-fi manga I have ever read. All of the characters are great. It basically has an ensemble cast, so each character gets pretty equal time. It was a quick read, but it did not feel like it was too short, and more importantly, it wasn't too long because I read it all in one night. I just couldn't put it down. I went to bed at 4 a.m. and paid dearly for it the next day at work (it was worth it). My favorite character was probably the high I.Q. genius guy, and the only flaw with the story, ishow there are things the other characters figure out that he should have been able to.