The Dark Mermaid Princess

She's the twin sister of Nanami Luchia, the pink mermaid princess. Her name is Darya Himura Nanami. She is the princess over the dark one. What's the dark one you ask? It's the Red Sea where the sea is only red like blood. You see Darya is the dark mermaid princess while Luchia is the light mermaid princess. They work similar to gaito and kaito. Unlock the mystery of the two kingdoms and to why they have their ties to the twins gaito and kaito. What powers does this mermaid have? Does she hold secrets untold to the truth? Will she save gaito? Will she show them things in different darkness than what gaito and Sara thought existed? Just will you read to even find out?