@Stellar pretty poor sound mixing in this version though... sounds like a badly downmixed 5.1 track. The actual OP as it's intended to sound sounds different.
10/10 Never seen NANA but I really like Tsuchiya Anna's music.
It's really worth the watch, especially if you don't mind crying lol
It's out of place in the show, I thought. But 8/10, great Opening.
WE NEED MORE KEY!
I wanna watch the series now (9/10)
Sorry guys but whether this is anime or not, the opening I cannot deny (Also I'm an agent of Chaos and/or Revolution)
If you don't consider RWBY an anime here's an alternative
7/10 It's nice. (RWBY opening.)
5/10 Instrumental is better
5/10 It's ok.
Beautiful, albeit a bit cliché. 9/10