On the heels of the sports festival comes the biggest middle school event yet - the school field trip! But before Kazuki and Kanata can worry about keeping up appearances in Kyoto, they'll have to pass their midterms. Unfortunately, Kazuki's math skills don't stand up to his mature, model-student appearance, so when he finds himself in a mathematical midterm pinch, he asks for a favor from none other than Shiki-san!