I don't get it but I like it. Is it like a trailer for some series they plan to make or a one off? It's well done. They modeled her to have HUGE hips and butt.
They did post this in a pinned comment under the video.
"This animation is the debut of many big projects to come. I know that I've taken lots of time to finish animations (Sometimes I would only upload once a year!) but this will change. There's so much to look forward to you won't want to miss it. Especially my next project, stay tuned."