Paco and the Magical Picture Book

Once upon a time, there used to be a hospital where strange people were taken. Onuki (who was regarded as the strangest person there and who was most disliked by the other patients) hit on an idea to perform a play entitled "Gama Ouji vs Zarigani Majin" (The Toad Prince vs the Crayfish Magician) and to do so for the sake of a girl whose memory, due to an accident, is limited to the happenings of only one day at a time.