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...
The beach? Are you actually thinking 
about going swimming in winter?
Das Meer? Hast du vor,
bei der Kälte schwimmen zu gehen?
¿El mar? ¿Realmente piensan
ir a nadar en invierno?
¿El mar? ¿De verdad pensáis
ir a nadar en invierno?
La mer ?
Vous voulez nager en plein hiver ?
Il mare? Davvero state pensando
di andare a farvi il bagno d'inverno?
Praia? Você está mesmo pensando
 em praia durante o inverno?
Море? Вы что, зимой купаться собрались?