One Piece: The Spirit Master

Introduction: A young man who has never watched One Piece accidentally traveled from the magical world to the world of One Piece. While awakening the magic, he also controls the spirits that allow people to have superpowers and transform into young girls. Monkey D. Luffy, the protagonist who dreams of becoming the Pirate King, takes a fancy to him and induces him to become his vice-captain. The two souls collide with each other and make the Straw Hat Pirates famous. (This book is about growing up with the boat!)