Is there a more beautiful OP than this?
Not a OP but still the best of all Aria songs.
I also love Natsu Machi, easily one of my favorite EDs ever.
It's a shame Round Table didn't make the ED for Origination.
The thing is, I don't know which Aria OP/ED I love more. It cycles. At times it will be one, but then I can't stop listening to another one.
Having the Aria soundtrack on shuffle while first reading the manga after watching the Anime this song came up during the last 10 pages or so.
Needless to say I'm still in tears.
All Arias are lovely and should be loved equally.
That said, Undine > Nanairo no Sora o > Euforia > Spirale
Natsu Machi > Rainbow > Smile Again = Ashita, Yuugare Made = Kin no Nami Sen no Nami
I'm so glad i bought the Vocal collection off Amiami