World's Finest Mage

In the aftermath of the collapse of the 203rd Aerial Mage Division, Tanya von Degurechaff is struck down by Mary Sue who successfully fires a beam, striking down the Devil of the Rhine for good. Tanya was satisfied to call it an end, claiming endsieg over Being X before appearing before a goddess who offered Tanya a chance of reincarnation in the Noble Assassin House of Tuatha Dé