قسمت 6: هم‌کلاسی‌ها در امتحان آلمانی تقلب می‌کنند و شکست می‌خورند، در حالی که آینا به بازی قایم‌موشک می‌پیوندد

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Iori, Kohei, and their classmates try to cheat on their German language test, but their plans all backfire. Later, Aina is officially inducted into Peek a Boo, only to find herself as the only sane member of the group. She begs the others to put on some clothes after going to the store with Chisa, but returns to find them in the middle of another stripping game. After the party, Shinji and Ryujiro try to run the new members through hand signals to study for their next diving trip, as Iori ends up practicing to get away from the potential wrath of Nanaka. The next day, Iori goes diving with Chisa while Aina gets past her initial awkwardness and they both enjoy their time underwater. (Source: Wikipedia)