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.
Rin-chan isn't in Japan anymore.
Rin-chan ist nicht mehr in Japan.
ya que Rin-chan no está en Japón.
Rin-chan ni siquiera está en Japón.
Rin n’est plus au Japon.
Rin-chan non è più in Giappone.
Rin-chan não mora mais no Japão.
Ринчик сейчас не в Японии.