Fairy Tail: I was transported to the wrong world and became a pirate

Hughes, discharged from the hospital, is transported to the world of Fairy Tail by a discharge notice. But he's a little troubled... why does his cheat ability always think he's in the world of One Piece?! The Magic Council is considered the Marines, and the guilds are recognized as pirate crews. Mira is Oars the Demon, Laxus is Enel the Thunder God, Erza is Hawkeye... where is he going to find the Lord of the Coast? And who is Whitebeard?! [Defeat the Yonko Shanks] [Torture the evil Celestial Dragons] Hughes stares at Gildarts and Granny Poryusica in front of him, lost in thought... [Ding! Completing this task unlocks the ultimate technique, Galaxy Impact] "Oh, that's alright then!"... This is a magical world, but it gave birth to a Black Dragon King who is immune to magic and can even devour time and space. Years later, Hughes, who has mastered the Flame-Flame Fruit, the Momo-Momo Fruit, the Teleport Fruit, and all three types of Haki, stands on the dragon's head. "Acnologia, what kind of king are you again?"