Homare finds the solitary island where Shion washed ashore and the two are reunited. But there's no time to rejoice. With no food or water, succumbing to dehydration is only a matter of time... All they have is filthy water they find in a cave... In this dire situation, the two of them use a secret technique for rehydration!? Will Homare and Shion make it back to the island?
How to Replenish Water
القضية 12:   كيفية إعادة التزود بالماء
Wasserversorgungsmethoden
Una forma de rehidratarse
Una forma de rehidratarse
DOUZIÈME PÉRIPÉTIE – LE PROBLÈME DE L’EAU
Come rifornirsi di acqua
12º caso - Como reabastecer a água
Случай 12. 
Восполняем запасы воды