Oh, I love that manga! I bought all ten volumes in one week
Hayama is great! But I dislike Sana... She's just so stupid in the later volumes!
Btw, does Fuuka have an accent in the English edition too? Originally she's from Osaka or something, but the German translaters let her "berlin". ("to berlin" or "berlinern" is a verb that means you speak with a Berlin accent.) It's so funny!