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.
Yep, because I went to a different school.
Ja, weil ich auf eine andere Schule 
gegangen bin.
Sí, y más porque yo estaba en otra escuela.
Sí, y encima yo estaba en otro colegio.
Oui, car je n’étais pas 
dans la même école que vous.
Già, è perché ho frequentato 
una scuola diversa.
Sim, eu mudei de escola.
Да, я ещё и в другую школу тогда пошёл.