After spending their first year of high school in peace and quiet, Haruka and Makoto run into Nagisa, a new student who was a member at a swimming club with them when they were kids.  That swimming club is being torn down, so the three of them sneak in to dig up a time capsule that they buried in the back, which is when they are reunited with Rin, the fourth member of their group who left to study abroad.
So Rin is really back from Australia?
Also ist Rin wirklich 
aus Australien zurück?
¿Entonces Rin regresó de Australia?
Entonces, ¿es cierto que 
Rin ha vuelto de Australia?
Rin est donc vraiment 
revenu d’Australie ?
Quindi davvero Rin 
è tornato dall'Australia?
O Rin voltou da Austrália?
Так Рин всё-таки вернулся из Австралии?