1) The art is really unclear, making it sometimes hard to understand what's going on. It's not ugly, just really average without any style of it's own.

2) The set-up to the story is really cliche, and does nothing but stick to the formula.The characters are your standard stereotypes from every high-school drama ever. Besides, no one gets any real development or backstory untill it becomes relevant to the story.

3) The writing is baaaad. The mystery genre is supposed to have some nice twists and turns along the way and Doubt... Let's just say that the reveal is comparable to "Luke,I'm your father". It reeks of Deus ex Machina.