Natsuki sets his heart on creating a tidal power generator that utilizes the ebb and flow of the ocean's tides. He dives back into the ocean to find some materials and salvages some resin from the ruins of Ryuuji's family's factory. As soon as he gets back he gets to work. As they are working, Natsuki and Ryuuji exchange heated opinions over how the generator should be built. Atri intervenes and the two guys become closer friends. Meanwhile, a suspicious-looking character peeks at them from outside of the school....
Even at the bottom of the ocean?
حتّى في قاع المُحيط؟
Auch auf dem Meeresgrund?
¿En el fondo del mar?
¿En el fondo del mar?
Même au fond de l’eau ?
Perfino in fondo al mare?
Até no fundo do mar?
Даже с морского дна?
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