After having watched the first 3 episodes of C^3, I must say this show really has potential. After a light, almost excessively cheerful introduction, the show gets progressively more action packed, emotionally involved and takes a more serious tone revolving around sin, guilt and regrets.
I found the art to be appealing, as is the case with most anime this season, I found the cast of voice actors to be strong, the main male lead in particular, and I found the pacing and development to be varied so as to accentuate the important parts.
If you try to pin this show down with episode 1, then you're not going to give an accurate opinion on what it is. It is a varied show with an interested plot mechanic and good production values, that is worth giving an hour of your time to to view the first three episodes. Happy viewing!