This is Lovely Princess AU, here Athanasia is safe from death because Lucas has helped her

Athanasia hides her identity, turns her hair black, and changes her jewel eyes with magic, His name was changed to Nico Robin, or now known as the Straw Hat Pirate Archaeologist

he set foot there for many years, here Jannette has become Emperor Obelia

Nami: "Are you okay Robin?"

Sanji: "you look pale Robin chan"