After the dragons destroy the bombs across Ishgal, Face is deactivated, saving Earth-land from destruction. Acnologia gains a second wind and resumes his fight with Igneel, leaving Natsu and Gray to argue over whether to destroy E.N.D.'s book. However, Zeref arrives to retrieve the book and kills Mard Geer before vanishing. Igneel reveals that he and the other dragons sealed themselves within the Dragon Slayers to immunize them from becoming dragons like Acnologia, and to have the opportunity of killing Acnologia themselves. Igneel bites off Acnologia's arm, but Acnologia mercilessly kills the fire dragon, to Natsu's horror.