>>536132193
>Am I missing important dialogue?
You sure are

>>527998780
The Card Kingdom, the Cyber City and the TV World were all a part of Kris and Dess' make believe playtime
Kris probably wrote those songs theirself

>>527758251
The "forced" is referring to the ferris wheel ride together. There's quite a bit that points to them playing together when they were younger
I think there's a good chance that the two families grew distant after whatever happened to Dess and maybe they kept trying to make Kris and Noelle hang out in order to maintain some semblance of normalcy

>>527304437
Two things
#1: The prophecy requires certain things to happen and those Dark Worlds have the Darkners that make those things happen (Lancer will say Toothpaste and then Boy)
#2: All three locations are connected by the make-believe that Kris and "the girl" (presumably Dess) played when they were kids using the laptop, stuff that ended up in the unused classroom and the TV