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.
Then you slide your body 
through that opening.
Dann gleitest du 
mit deinem Körper durch die Öffnung.
y en ese espacio que obtienes 
vas deslizando el cuerpo,
Y entonces, deslizas tu 
cuerpo en ese espacio,
Engouffre-toi tout entier dedans…
Fai scivolare il tuo corpo 
in quella apertura.
E então, deslize o seu corpo 
através desta abertura.
А потом продвигайся всем телом в него.