Very impressive hand movements for the Chunithm-like gameplay from Silver Wolf. Not only that, it's also accurate and not just tapping on the pads as far as I can see.

Edit: chart also very overcharted.

Popurika has written a quite in-depth making-of article on Fanbox going into the details of the production starting from the concept, to the used addons for Blender.

Fanbox: HoYoHoYoにしてあげる MV (Archive.org)