I know you can do it in the American version because joeeytfox did it. I've looked all over the web and haven't found a thing that could help me so, I came to this form. Can someone please help me?

2 ways on cutscene skip.

Either beat the game fully on first playthrough and never turn your wii/wii u off

or.

100% file Watch all cutscenes and 2-3 boss fight saves

I do have a 100% file and I have watched all the cutscences, It still doesn't work though. What button do I press?

Hello! You will need to press Start button to skip cutscenes. You can also find useful inputs for cutscenes skips + any% route at http://pastebin.com/zknYABXq (guide by CrypticJacknife).

How do the inputs for the cutscene skips work? Do I do it all on the main menu before starting the game? I'm running on the Wii, so I'm not sure if it's any different

The inputs are done on the movie collectibles screen. There's three cutscenes that aren't on those collectibles and a run needs to be done in order to skip them after. If you power off your console or exit the game, all cutscene skips reset. If you're doing Any%, GL! :D

so, i would need do the inputs after i start a run?

During runs you just spam start where cutscenes would be to skip them. In order for this to be possible, you have to have previously "watched the cutscenes," which in this case means skipping through the movie collectibles with the movie input guide.