Lyrics: both
Ayu's lyrics are very inspiring and alan's are beautiful and simply amazing.
Vocals: alan
No explanation needed here.. alan owns all the jpop queens when it comes to vocals lol
song: alan
RED CLIFF has always been one of my favorite alan songs.. It probably is my favorite alan song lol. That song is so... magical and filled with emotion. Idk how to explain it lol
I kind of prefer the Chinese version over the Japanese though
