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.
I'll show you how different we are now.
Ich werde dir zeigen, 
wie verschieden wir jetzt sind.
Te mostraré la difencia 
que hay entre tú y yo.
Te mostraré la diferencia 
que hay entre los dos.
Je vais te montrer 
notre différence de niveau.
Ti mostrerò la differenza 
che c'è tra noi due.
Vou te mostrar o quão 
diferentes nós somos agora.
Я покажу тебе разницу между нами.