Im a new speed runner on this community, and I have being speed running this game since a week ago, (PB is 18:16). When I fight the first bowser, and I'm about to get the key, how can I skip the animation like Sekanor did on he's run?

I just uploaded my latest PB, and I want to make a video explaining how to speed run the any% category. If you guys want to help, please tell me! I well put your suggestions on the vid and I well put your names.