Playful, fearless, and somewhat childish, Dio Eraclea is the younger brother of the most powerful Guild Member, Maestro Delphine Eraclea. His unique Claus Valca’s skills gives him the nickname “Immelmann”, which refers to the the World War I German Ace, Max Immelmann.

i’ve never even heard of this anime at all, but this is an awesome cosplay shot. Thanks to Olga Dietrich for the photo!