Having never done one of these crossover things now, I have a question on how it works. I don't know DP, at all, though I'm pretty sure i started it for about 20 minutes before finding Kamihime. The tutorial one is pretty clear, but can I do stuff now? I.e., if I start playing DP now, will I potentially miss out on rewards that I've 'already done' when it goes live on the 12th? And conversely, if I DON'T start until the 12th, will it be hard to complete everything? I mean, as Aidoru mentioned, one of the KH ones is to do Ultimate (lol). Which for a new player is a no-go.