I pretty much agree with everyone else above. If you want a buildup, you can always use the opening or some of the more elegant dancey scenes in the anime so it doesn't have to necessarily be credits. Alternatively, if you really want to keep those credits at the start, I'd advise readjusting the ones in the version that'll get shown at the end. A different colour theme, different font and a different animation style will help change the feel of it so it doesn't feel like you're just copy/pasting stuff.
I don't really like the beta, some scene choices are weird and I'm just not feeling anything from it. I do get what you're trying to show and the lyrics do fit Nezumi to some extent but I think you can do better in terms of scene selection especially since 0:19 is perfect. You could keep what you have from 0:00-0:02, until the scene where his leg comes in and replace it with the one at 0:05/0:06 of his face. Then I'd advise using scenes from another section because it starts to get draggy and long. If you could maintain the same sort of style throughout, I think it'll look good.