Thanks for the response guys I appreciate it!
@Lifecharacter: that's what worries me if I don't like the characters that get most of the screen time I'll get really bored and quit but if the action IS really good well who knows?
@Akashic Records: the manga huh? that's always the answer XD.
@Trannosaurus: I don't actually read doujin until I watch/read the source material I read this one because of the Akuma no riddle crossover so don't worry I haven't spoiled anything yet. I asked the question because I've seen a lot of the pairing and got curious.