I downloaded and organized these images from Sankaku Complex, because that website really sucks to use and I hate it, and I'd rather have them be available here.

List of the cosplayers:
Yuki Ringo is Yoshika.
Nozomi Kannazuki is Barkhorn.
Kaneko Aizawa is Perrine.
Aya is Hartmann.
Riyo is Lynette.

If someone could find the original source of these images, I would really appreciate it (they weren't sourced on Sankaku Complex).