Michiru and Shirou encounter another berserk beastman and attempt to take him down when a group of drones called Engel Machines appear and capture it with tranquilizer darts. They follow the drones to the medical center, where they find that the drones were sent by Alan. He says that the berserk effect its due to "Nirvasyl Syndrome," the result of stress caused by multiple species of beastmen living together, and claims that this is what wiped out Shirou's village. Alan reveals he intends to prevent the syndrome by developing a vaccine to turn beastmen into regular humans, but Shirou becomes furious at the idea...