I, Battlegreymon on Rocks' Ship!

Luo Yu travels through the world of pirates and eats the devil fruit whose awakening path is BattleGreymon. Seeing Kaido becoming his loyal younger brother, Luo Yu chose to join the Rocks Pirates. From this day on, the Rocks Pirates have an extra BattleGreymon! Kaido: Once you say big brother, you will always be a big brother! Whitebeard: The strongest man in the world? That monster Luo Yu is the king of the world! Roger: One Piece? No one can be king in front of Luo Yu! Warring States Period: Luo Yu is the real terror in this world! Wulao Xing: Go to the Holy Land to invite Lord Im! What? Not even Im-sama? There's no hope, just wait to die! Sitting high on the throne of the void, holding a peerless beauty in his hands. Luo Yu said: I come, I see, I conquer! This novel and its characters are purely fictitious. Any similarity is purely coincidental and should not be imitated.