Aika and Kanna used to belong in the same agency? They did that Shinjin kouen together (probably where they became close)? Had concerts together? xD And they're the same age, not that weird that they'd be friends actually. To me it's more "O.O" to see Haruna and Wada being so close, so fast. xD
Kanon looked adorable when she first cut her hair but it looked so girly and mature on her when it got longer :') I just hope it's a better cut than the one in ShortCut...