M3: The Dark Metal - Season 1 Episode 7 Command of Solitude

The fact that the Corpse appeared outside of the Lightless Realm threw the entire academy into terror. While rushing their efforts to get the next prototype based on the Reaper into combat, they started selection for its pilot; and there, Natsuiri comes up with a certain plan. One night, Akashi visits the ruins of a town at Kasane's request, but the person who awaited was Heito. The case involving Emiru has Heito's hatred of Akashi showing openly, leading to his incessant taunting of Akashi...