Field Day is approaching and Ranka wants the cooking club to compete, but everyone except Miyubi refuses. Ranka and Miyubi begin training while helping the naked mole rats construct the sports field. Seeing their determination, Hitomi and Jin decide to compete. Kuroe, now friends with the donkeys, challenges them until Yukari points out they don’t have enough team members to compete. Miyubi arrives somehow able to run, only it turns out she has a cold and her increased heart rate made her faster temporarily...