I have kept this in a dark place since I purchased it. I believe the Koi Yakedome is a +Alpha bonus, but since it's unopened, I don't know what else is included besides Koi Yakedome ( ; _ ; ) I think there might be cards for other unit songs? As for the Christmas file, I used it, so it's in the condition shown in the fourth picture. Feel free to comment ᐢᴗ͈ ᴗ͈ᐢ♡