The 8th [[official alternate costume|costume]] of [[hololive English]]'s [[Mori Calliope]], as seen in post #6600205. It was designed by [[Urana Kei]] for her 4th EP [i]JIGOKU 6[/i], and was turned into a 3D model for the EP's corresponding release live concert.
mori calliope (jigoku 6)