Draw with SAI.

Drossel:"Hey, Mr.Pikkeru, What is this costume and Coloring?"
Gedächtnis(in the left):"That's an idol costume 46723 years before. and, My name is Gedächtnis."

Gedächtnis:"According to a legends... The world was enveloped in Mikku-miku flames by the her rare song power."
Drossel:"... What is Mikku-miku??"

When FireBall was announced, it became a problem that the silhouette of dorossel resembles Hatsune Miku.

By the way, MIKKUMIKU is this. -> Link