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.
Well, it's all mental anyway,
Naja, das ist Kopfsache,
Bueno, en todo caso esto 
es algo mental, así que
Bueno, estas cosas 
siempre son psicológicas,
De toute façon, 
c’est surtout psychologique,
Beh, è il pensiero che conta,
Bom, é somente algo psicológico,
Ну, это вроде как самовнушение,