Charlotte, however - an upcoming collab between Key, Aniplex and PA Works - looks pretty dynamite and has been added to be To Watch List already. You can find the official PV below:
First of all, that piano is banging. I want that song! I wouldn't be surprised if it doesn't feature in the Charlotte series, either as part of the OP or in the score. The animation in the PV is very polished and dynamic, which is hopefully the overall aesthetic of Charlotte.
For some reason, the main female character reminds me of Rin Tosaka from Fate/Stay Night, albeit a little younger and with a lighter hair color.
Are you planning on watching Charlotte when it airs next year? Or are you going to wait until another PV and some plot/cast details come out until you decide?