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.
I knew I shouldn't have gotten one so cheap!
عرفتُ بأنّني ما كان ينبغي
!أن أشتري درّاجة رخيصة
Hab ich wohl doch
an der falschen Stelle gespart!
Como siempre, lo barato sale caro.
Lo barato no sirve de nada.
J’aurais pas dû acheter
du premier prix !
Lo dicevo che costava troppo poco!
Eu sabia que não devia ter
comprado uma tão barata!
Зря самый дешёвый купила!