One Piece - I'am a Luffy! - Theory for the Lost Century of the Fanfic (Patreon)

I was starting to write the chapters of One Piece, but I began to think about how I would end this fanfic. After all, I'm going to take a shot in the dark and try to create my own theory and representation of One Piece.

I'm going to use the most likely theory that will happen in the original work about the Lost Century, which is about the Great Flood. But I want to delve deeper into the theory that Im is a fallen angel and created the giants (a biblical term for beings who corrupted humanity before the flood in the Old Testament), thereby corrupting all of humanity.

God created a way for humanity to fight against these beings spreading chaos and materialized the will of the people into fruits. His order to the Ds, a group that managed to protect themselves before being corrupted, was to create the great Ark and the flood itself. Thus, the three ancient weapons were created to destroy all the evil in the world, which flooded all the continents and left only the islands.

However, the giants (Tenryuubito) and Im (Fallen Angel) survived and retreated to the lands of the Lunarians, exterminating the entire race and seizing one of the ancient weapons, dominating the world after Joyboy and his group died some time later.

It's still a very vague theory, and I need to delve deeper into it. This fanfic has four volumes, and we are starting the third one, but what do you think of the premise?

The One Piece is the truth about this world.
I'm doing this because I know my fanfic will likely be finished either by the end of this year or early next year.