In the near future, much of the world has been forgotten at the bottom of the ocean due to rising sea levels. Natsuki Ikaruga, who lives in a small town surrounded and stranded by the sea, is invited by a mysterious woman, Catherine, to search for a treasure in his grandmother's house who was a marine geologist. One day, he dives to the bottom of the ocean in a submarine and encounters a mysterious capsule with a girl sleeping inside. The girl was a humanoid so sophisticated that she could be mistaken for a human.
But of course!
!بالطّبع
Natürlich! Ich bin ja
auch hochentwickelt!
Por supuesto que no.
Yo soy altamente eficiente.
Es natural. Yo soy altamente eficiente.
Pas étonnant,
È naturale!
Mas é claro!
Естественно.
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