Maki is a devoted teacher in charge of another graduating adult role-play class. Wanting every student—including the four notorious troublemakers—to graduate, she has disciplined them strictly, and her efforts pay off when the entire class completes school. After the ceremony, she sits alone in the orange-lit classroom, looking at messages of thanks on the blackboard and reliving old memories. Then the four problem students enter with smiles and tell her they have come to repay her for everything she did.