The next morning, Cai tells the girls that he's back from the war and that they should meet him at the train station. He's going to meet them at the station, but first, he wants to make sure they're all dressed up for the ghost celebration that's coming up in a few days. The girls are psyched to meet Cai, but they also know that they'll be judged on their appearance. They're going to have to pretend to be "ghoul masters" , which is a fancy way of saying "ghouls" . Cai asks the girls if they'd like to play a prank on him by pretending to be late for a date. They agree to do so.