I just hope that a gamechanger happens soon, because this manga isn't that special yet. It's slice-of-life with absolutely no fantasy aspects at all, and I'm fine with that, but it's been dragging on. It also suffers from terribly one-dimensional characters, the same problem that Death Note had.
At first I couldn't really tell, but as the series progressed I noticed that the characters had literally no personality (character quirks don't count, so don't bring up Niizuma's traits). I have no idea if the main duo had a personality from the start, and I'm too lazy to read the first couple of chapters, but they don't have much of a personality now. They say and do anything that's convenient to the situation, which is a liberty lazy authors take.
(Don't even make me bring up that retarded sidekick girl who's only in this series to give Takagi a love interest. I hope to God she gets killed off soon.)
Has anybody else noticed how odd it was that three years passed by, yet Mashiro and Takagi have only gotten into one disagreement? Or that they haven't visibly aged at all? They still look like thirteen year-olds when they should be looking more adult-like now. They're high school seniors, not junior high seniors.
Another thing that bugs me is how they're joyriding through everything. If making a manga was that easy, there would be millions of mangaka out there. They only entered what, two contests? Not only that, but they got in third place in the Weekly Shonen Jump magazine on their first series, which was only on like chapter 10 anyway.
The plot twist at the end of Chapter 44 seems tacked on, and it felt out-of-place when compared to the rest of the chapter. It's like the editor told them to make Mashiro have a terminal disease or something (a soap opera favorite!), because even they realized how plain this was getting.
That's just my little complaints about this series. I'm still going to follow it, though, because I know that it has the potential to get better and it fills in the void D.Gray-man left when it went on hiatus.