The teacher introduces the new student, who is named fourteenth, and introduces him to the other students. He tells the story of how he accidentally drank so much at his promotion night party that he accidentally revealed that he was the son of his late friend, who was not his own at all. As a result, fourteenth was ostracized. The teacher tells the student that the school is holding a dinner party that night, and that the two of them will be responsible for buying the food.