Final Fantasy Changing Direction

This is a world where Falsi crystal super creatures created by God coexist with humans. Under the protection of Falci's powerful magic, humans live carefree in a "cocoon" world suspended in the air. No one ever thought when such a happy and peaceful life would end. Until one day, the evil Fal'Cie from the underworld beneath the cocoon resurrected in this peaceful world. It curses those who approach it, turning them into the legendary "Lucy" and giving them a destructive mission. If Lucy completes her mission, she will turn into a crystal and survive forever; if she fails, their ending will be crueler than death - obviously, becoming Lucy announces the coming of death. After 13 days of brewing, the situation finally broke out into a fierce battle between the cocoon and the lower realm. Originally, everything was destined, but what will change after he comes? This novel and its characters are purely fictitious. Any similarity is purely coincidental and should not be imitated.