In order to procure water, the girls explore the island. Homare and Asuka find a dry stream bed. In order to get water from the dirt they dig up there they'll have to...!?
Meanwhile, left behind on the beach, Shion and Mutsu, both faint from dehydration, make a certain promise...
It's so good! It's the best water
I've had in my whole life!
!لذيذ! أطيب ماء شربتُه في حياتي
Köstlich!
¡Qué rica! ¡No había tomado
agua tan rica en mi vida!
¡Qué rica! No había tomado
agua tan rica en mi vida.
Buonissima!
L'acqua migliore che abbia bevuto in vita mia!
Isso é tão bom! É a melhor
água que já tomei na vida!
Какая вкусная! 
В жизни не пила воды вкуснее!