Dracul Ryuu-Ryuu

Luffy is the son of a warlord and Shanks has given him and his two brothers Legendary Zoan Fruit. Well more of them taking his treasure chest and ate the fruit. Now three boys are going to unleash Chaos onto the world and how will the world take it. Pairs for now are unknown as i love my gender bends. But Luffy is a boy. Lucifer D. Monkey and the title might give you a hint.