The four princes of the kingdom of Isyoi arrive at the house of yuna, the princess of the house. The princes are excited to meet the characters from the fan-tasy book they've just read. The prince tells them that he's the "evil genius warlock" , and that he wants them to dance with him. He tells them to keep their hands off him, because he'll "make the princess hideous" . Then the prince turns into a "hideous toad," and the princes are all "ooh, that suits you better than a princess did!" . They all laugh at the princess, who has been transformed into a frog. They're all "oh, that's your true form," and then the prince says, "you can't hide your impure hearts!" , which is a reference to the fact that he was once transformed from a frog to a human being. He says that the prince is the only one in the kingdom who treated him with kindness when he was a frog, and he wants the prince to be the heir to the throne of Iyoi. The Prince says that they're going to "rough up" the book, but the book doesn't