Alriiiight just finished watching the PV like five times and here’s what I think about it so far:
The stars, man, the stars! The PV is just reminding us of the stars now. And it’s zooming in on something that looks like a comet. @Bonecuss might be right in that Charlotte is a meteor!
Yuu is ab. so. lute. ly. FABULOUS~ The vibe I am getting from Yuu is that he is very self-centered. He probably doesn’t give a damn about the well-being of others except himself (and probably his imouto, as we can see from the PV). We also instantly see him using his power 
One thing I noticed in the middle of the PV is… Yuu is suddenly introducing himself in front of the class. So he’s either a freshman or… He mysteriously had to transfer into the school… Hmmm…
Naonao seems very serious. Like she’s on top of her game and everything. She seems like she’ll have the classic Student Council president vibe… without the mature looks that come with it XD Right now, the vibe I’m getting from her now is that her personality will be the most similar to… Tomoyo, from CLANNAD!
Joujirou does seem very… Takamatsu. Serious on the outset, but he’s definitely gonna be a butt monkey xP Definitely. Like we see him staring down at Yuu, glasses all opaque and both of them seem beat-up… The next moment he’s crying to himself like a butt monkey haha
Ayumi seems very genki, as expected of the imouto trope. Yusa also seems very cute-ish. Seems like she’ll be the perfect idol type of character. Reminds me of Setsuna from White Album 2 heh.
AND LASTLY! We see Yuu and Nao looking at the see with… someone seeming to be on a wheelchair? at least, it looks like the wheels of a wheelchair that Nao is pushing… Urrrrgh why do I have a feeling it’s Ayumi in the wheelchair >_<
So, with all this reminded references to the stars and including the fact that the anime is gonna talk about their powers, I’m thinking… What if these abilities of theirs actually come from the comet/star itself? I think it wouldn’t be a far cry to think that it is the source of their powers, and something they’ll have to face head-on in the future.
This PV is just making me hyped all the way. Not the crazy, wild kind of hype, but the drop whatever I’m doing and try to understand everything about it kind of hype
