Personally, I was smiling so much my face hurt by the end of the series... This isn't the type of anime I usually binge on but I ended up watching the first episode one day and the rest of the series the next. One of my friends refuses to believe me when I tell him that Haruka is the epitome of moe.
On a side note, was I the only one who laughed at the song selection for the annoying, rich, blond guy in the last two episodes. Dvorak's New World Symphony Mvt. 4 (concert band has cursed me for life).