After passing their German test, Iori's classmates decide to have a party at his place in Grand Blue to check if he actually has a relationship with Chisa. Shinichiro tries to hook up with Nanaka, but ends up running into several naked men instead. As the crew are about to drink, Chisa appears, creating an awkward moment for Iori. The next day, Tinkerbell challenges Peek a Boo to a doubles tennis match to get revenge for the humiliation their Captain incurred at the festival...