Itsuki, Nayuta, and Miyako have a hard time dealing with the cold and head down to Okinawa. The next day, they visit a remote island so Itsuki can do some research and Nayuta decides to flail around naked in the water. Miyako is awed by what she's seeing and eventually jumps into the water naked, as well. Two days later, Itsuki is invited by his illustrator to go to Hokkaido, where they try various local cuisines. However, Itsuki finds out that Setsuna had been ignoring a deadline...
Convenience stores in Okinawa 
are so interesting.
Echt interessant,
die 24-Stunden-Shops hier in Okinawa.
Los minimercados de Okinawa
son interesantes.
Los supermercados de Okinawa
son interesantes.
Elles sont bien,
les supérettes d’Okinawa !
I supermercati di Okinawa
sono pieni di roba interessante.
As lojas de conveniência em 
Okinawa são tão interessantes.
Интересные у них тут универсамы.