Salomé Carpenter, the chief researcher of Huey Laforet's personal research team, Rhythm, discusses his disappointment at the loss of one of their most precious subjects--Rail. He explains that they had originally conducted vivisections on Rail without anaesthesia in order to test the pain tolerance of homunculi. However, approximately five years ago, during a session that Huey himself was part of, they had half-accidentally destroyed much of Rail's sense of touch.