Junior English major Collin McGrath won’t soon forget the day back in high school when he and his younger sister were reclining on the couch, recovering from a particularly gruesome episode of the anime series “Attack on Titan.” McGrath said they should put on something happy. His sister’s response would change his life: “How about ‘My Little Pony’?” McGrath shrugged and let her put it on. He wasn’t particularly interested in the show, but he...