Haruka and the other club members decide to hold a training camp to prepare for prefectural.  Each member follows his own regimen.  However, Rei is unhappy about falling behind and heads back into the ocean at night to practice.
When did that happen?
Wann ist das passiert?
¿En qué momento hicieron esa promesa?
¿Cuándo hicieron esa promesa?
Quand se sont-ils promis ça ?
Quando è successo?
Quando isso aconteceu?
Когда это было?