One Piece: Momousagi Wants to Take Me as Her Disciple

[Pirates + Two Heroines + Fan Fiction + Cunning Protagonist + No System + Sword Cultivator + Overpowered Devil Fruit] Chen Fan accidentally transmigrates to the world of the Pirate King and becomes a warrant officer stationed at the Marines' Alabasta base. From then on, he takes the new name Saint Martin D. Bentley. He obtains the Mythical Zoan Bird-Bird Fruit, Model: Three-Legged Golden Crow, and is taken under the wing of Vice Admiral Momousagi (Gion), who insists on teaching Bentley swordsmanship. By this time, Luffy has already set sail on his grand adventure!