At last the final puzzle piece fills in and the image of Mita Park and we pan up to see Misaki’s hat blowing in the breeze, an oddly serene conclusion to such a high energy intro.
tl;dr, Welcome to the NHK’s OP is surreal and evocative and more than a little funny in a dark sort of way. It truly is a lot of sound and fury that actually happens to signify quite a lot about the characters and themes.
Sorry for the length of this, but OPs can have a lot to examine.
inb4 I give Eva the same treatment