So I watched the first episode of this today, and I rather enjoyed it. Here is a description from MAL:
Meet the members of the Astronomy Club:

This is the male protagonist, Ooyagi Saku. He likes books and hates being pestered by Mihoshi.

This is Akeno Mihoshi, Saku's childhood friend. She likes Saku and stargazing, and is extremely hyper.
Did I mention that she likes to spy on Saku?
This is Yarai Sayo. She is... well, she is Sayo. I don't know.

This is the Astronomy Club President, Roma Takeyasu. He is dying.
Seriously guys, aren't you worried about your Club President? Oh wait, nobody cares.
The beginning reminded me of Kanon, what with the whole [spoiler]guy and girl are childhood friends, girl falls off of a tree and winds up in the hospital, then the guy skips town, only to return seven years later[/spoiler] thing. But overall it seems to be a fun and silly romantic comedy.