That safety pin never stood a chance.

The artist used Kurozu_(crozu)'s image material: https://twitter.com/crozu/status/732539823353778179

EDIT: Its twitter hashtag is #お尻のほうがいいテンプレ

What's this outfit? Is that from any new song?

Hatsune Miku's backstory is that she is an android (gynoid?) and she certainly does perform as a projected video image (sessile robot.)

If Miku was a machine she would not experience the pleasures and pains of embodiment, but Wokada puts back the missing elements to depict a fully embodied Miku, starting from the detailed study of anatomy and putting it together with the "slice of life" situations that one might find in a game like Project Diva.

Great stuff!