Youjo Senki: Saga of Tanya the Evil: Season 1, Episode 10

1 - 10: The Path to Victory

Tanya's spectacular mission is a success, and the Republic is surrounded and crippled. But on her way back, she runs into a group of allied mages, lead by Anton Souix, the man she crippled once more. He's back, and powered by Being X, and his one mission in life is to take down the Devil of the Rhine!