Yaaay, it's out! ^^ You did a nice job with this, Elina~
CAST
OP - Tsuki, you're always improving, though your pronounciation always seems rather Americanized, mostly your vowels~ you have a sweet voice, though, so keep working on strengthening it. But you did well, it was pretty. ^.^
Kaoru - This seems like your usual typecast role, so I guess it fit pretty well. The scripting probably being a bit awkward made some of your line delivery awkward as well, but I don't really know whose fault that is. Maybe a combination of both. Sometimes it's hard to read your emotions, like when you're supposed to be cheerful or sad; you mostly just sounded serious all the time... I think it has a lot to do with you having such a heavy voice, but it could be something to work on. ^^; Watch your mic puffs, too.
Itsuki - Doesn't sound as old as he looks, but it's hard to get a really mature male voice like that. Your acting sounded natural and the voice was pleasant on the ears, though, so I liked it.
Aoi - Sweet, cute, just adorable. XD She sounded really young, but I don't know her character that well so it may or may not be fitting for her. You seemed to have her personality down, though - so sweet. *-* Some of your line deliveries, too, were a bit awkward and not totally natural-sounding, but it wasn't a huge glaring issue or anything.
Miyabi - Kitty, I love your sexy low voices <3 You sounded hot!

But I will nitpick on your pronounciation and say "san" is pronounced more like "sahn" with a more open "ah" sound >3 Hee hee. Other than that... no complaints. o_o
Little girl/boy - Very cute children's voices. Rasha, you're great at those little boys!
Tina - Cute, though it seemed low for the character~ not too bad, though I think you could definitely use more energy and enthusiasm with this character. *nod*
Mayu - Ahahaha, you really cracked me up XDD IT'S A FIIIIREEE! Your energy was unmatched in the cast and your delivery was adorable. :3 I really wish you'd had a bigger part, because you shine here. ^.^
Chika - I imagined her having a higher, younger-sounding voice, but yours wasn't bad. Your delivery and energy are improving; she sounded energetic, which was good and suited her. ^_^
Taeko - You still suck. x_x AND YOU CAN'T ACT FOR CRAP.
ED - Wow, beautiful, you guys! I never imagined this as a duet, or haven't heard it as one, but it was just lovely - and sounded a lot like the two main characters were singing it. Amree always has a beautiful voice, and Moriogawa's went quite well with it. ^^ Good timing and pitch, you guys sound great together!
MIXING
Lovley job on the songs, for one; the synching on the ending was surpisingly good, though I think a better karaoke could've been made (I've done one that's higher quality, I think). In the start of the episode, it was totally silent, and I think since it showed an outdoors scene, you could've used some ambience SFX - like birds chirping or some other outdoor sounds, just to set the mood and place better. ^^ Also, Itsuki's lines needed noise reduction, though if I remember right you have a hard time doing that. Your use of SFX is really improving, and I noticed the effort. Some of them might need a little editing for length sometimes, though.
Volumes seemed pretty good, too, though some voices seemed a bit louder than others. Still, the music and SFX were good, and weren't overpowering. Nice attention to detail with things like echoes.
You already mentioned the lip synching being off, though, so I guess talking about that would be redundant... just keep working on it, I guess. ^^;;
I think this is some of your best producing to date, though, Elina, so keep it up! Hard work pays off ne~
OVERALL
A very decent production, and quality work on everyone's parts (except me >.>). Quite impressive. Great job, everyone! ^_^