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....
I guess you're throwing
out our deal to split the amount?
أعتقد بأنّكِ تخرقين اتّفاقنا وهو تقاسُم المبلغ؟
Dann ist das mit dem Teilen
des Geldes wohl vom Tisch, was?
Deduzco que no vamos
a repartirnos el precio.
Deduzco que no vamos
a repartirnos el precio.
Visiblement,
il est plus question de faire 50-50.
Da come ti comporti, direi 
che non hai intenzione di spartire il ricavo.
Pelo jeito, não tem mais intenção
de dividir a grana, né?
То есть мы больше
не делим выручку?
ดูจากท่าทีแบบนั้นแล้ว
คงจะไม่ใช่การแบ่งกันครึ่งๆ ด้วยสินะ