NON NON BIYORI: OKINAWA E IKUKOTO NI NATTA

Suguru wins some tickets to Okinawa in a shopping mall lottery, so the whole gang plan to go on a trip there. To prepare for the trip, the girls practise being on an aeroplane and go to a convenience store to buy some travel things. Meanwhile, Renge is very thoughtful about how the trip may change her view on the world, spending the evening before the trip giving her farewells to the countryside. The next day, everyone sets off on their flight to Okinawa... Note: An unaired episode bundled with the seventh volume of the manga. — Description from AniList community (anilist.co).