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.
It is one of the many esteemed labels 
my high-performance self has.
إنّها إحدى العلامات المُقدّرة الّتي
تمتلكها نفسي عالية الأداء
Es ist einer meiner
hochentwickelten Statuswerte!
Es una de mis especificaciones
altamente eficientes.
Es una de mis especificaciones
altamente eficientes.
Un honneur tout naturel
pour une supermachine !
Merito del mio status di alta prestazione!
É um dos meus símbolos de status
como máquina de alta performance!
Одна из моих особенностей,
ведь я продвинутая!
มันคือสเตตัสหนึ่งของฉันที่มีประสิทธิภาพสูงค่ะ