One Piece Reborn: Warring States Period Is Actually My Grandfather

The male protagonist traveled through the world of pirates by accident and became the grandson of the former Navy Admiral Sengoku! In this huge world of pirates, the male protagonist will make continuous efforts to enhance his own strength, find companions, and experience countless battles... And all this is to find the great secret treasure that countless people dream of: Onepiece This novel and its characters are purely fictitious. Any similarity is purely coincidental and should not be imitated.