Aquarius System: The Leviathan

Ceto a girl born in a world where man had advanced to what they called the "final frontier" the vast expanse of the stars in the skys black ocean..but little did humanity know that more lurked in the dark waters of their home, their advancements not only hurt but awakened the creatures of the depths that they had been so oblivious of.
Ceto only felt pain seeing so many creatures killed or kept in smaller environments because of their destroyed homes turned to slime and plastic. Never in her life was she able to witness pure water, but this only tempted her to try and make change.
But this didn't go unnoticed for Ceto would soon be chosen to break and reform a broken world holding horrors that can't be forgotten.