One Piece mega AU

By: FunahoMisaki

(A/N: I own nothing and what if when Luffy began fighting at Marineford to save Ace but before her heritage was revealed, when showed a power that she was born with… and also ends up getting more help than she thought she would get when a late arrival shows up? AU Luffy speaking in tired person OOC FemLuffy)

"It-it can't be. There's no way you can have that ability." Captain Hina of the Marines said staring at Luffy shocked and wide eyed as she finished revealing a singing ability that froze many in their place as they listened to her sing. That was something else that made everyone freeze. They all, except Ace and Garp of course, thought Luffy was a guy… but nope she was definitely a girl… it did explain why her vest was always buttoned up all the way at least.

"A girl pirate captain? Bwahahahaa that's the most ridiculous thing I've ever seen! You should have just stayed in the kitchen little girl." Vice-Admiral Doberman said laughing as he walked over and did something that made all those who knew Luffy freeze. Garp face palmed, Ace paled, Buggy winced, Mr. Two ran for it, and Crocodile even whimpered!

He touched her hat.

"Sexist bastard! No one touches the hat!" Luffy yelled as she punched the Vice-Admiral in the jaw and sent him flying all the way up to where the Admirals were sitting. She didn't even use her devil fruit abilities, it was just a regular punch to the jaw…with monstrous strength.

"Eh? Why not? Jiji said Luffy got it from Luffy's okaa-san before she abandoned Luffy as a baby." Luffy, full first name being Luffimia, said looking at Hina confused and curiously as she turned back to the gaping woman as if she hadn't just hit a Vice-Admiral well over a hundred yards. Everyone was gaping at her even White beard while more than a few eyebrows twitched… now there were two people who spoke in third person!

"Straw Hat-chan…wh-what's your full name?" Hina asked staring at Luffy wide eyed in shock… and hope?

"Eh? Monkey D. Luffimia, but Luffy prefers Luffy why?" Luffy asked confused and causing Hina to collapse on the icy ground, her knees too weak to support her anymore.

"H-How? Hina was told you were dead… He told Hina you were dead…" Hina said staring at Luffy in wide eyed shock as tears welled in her eyes.

"Eh? Lady are you feeling alright? Luffy doesn't know who told you Luffy was dead but they lied. See? Luffy is alive and going to save Luffy's brother. Luffy alive and well." Luffy said grinning at the woman at the last sentence and those last four words seemed to hit Hina almost physically as she fell backwards onto her elbows staring at Luffy and crying heavily. She was smiling but crying heavily too.

"Luffy hopes you feel better soon Miss but Luffy has to go save Luffy's brother now. Bye bye." Luffy said looking at the woman worried and giving her a sad smile before she walked up and kneeled down to give the woman a hug. Hina froze for a minute, then hugged Luffy tightly in response as she stood up when Luffy did.

"Yes… Luffy must save her brother now… but Hina is going to help Luffy… if only so Hina can make up a little bit of the time she has lost." Hina said causing the nearby marines to go wide eyed in shock, Hina would abandon the marines so quickly and without thought?!

"Tell Hina the truth… are you hurt badly Lu-chan." Hina asked worried as she wiped away her tears and looked at Luffy worriedly.

"Luffy is fine and grateful for your help. You're really strong Luffy bets. You gotta be stronger than that sexist bastard." Luffy said grinning widely at the woman who gave her a warm rather motherly smile.

"He is a Vice-Admiral, while Hina is just a captain. Surely he is stronger than Hina. Although that punch shows he is not stronger than you. Now shall we get going Lu-chan? Hina has some unfinished business with Hina's father in law." Hina said glaring up at the execution stand where Garp was sitting beside Ace staring at her shocked and slowly beginning to pale.

"Eh? Okay then." Luffy said as she began running forward, obviously confused but not pushing for information instead she focused on saving her brother.

"You'd dare turn traitor for this pirate!" Another Vice-Admiral said angrily as he rushed at Hina and Luff, causing the strawberry blond woman to grin viciously around her cigarette.

"Damn straight!" Hina said as she ducked to the side a bit as he charged at her, quickly she stuck her arm out and casually cloths-lined him as he charged right past her. Her devil fruit activated as her arm went right through him and he then had a cage bar wrapped around his neck as he laid on the ground in pain from the cloths-line.

"Bring it on! Hina will stop holding back and take out all of you! Especially you Garp! Hina is gunning for your blood!" Hina shouted towards the rest of the Marines, tossing her Marines coat to the ground as she unleashed her own conquers haki, which flattened half the Marines around her.

"Those of you loyal to Hina and Hina alone! Discard your Marine status and clothing now! Hina is no longer a marine! Hina… is now fighting on the side of the Straw Hats!" Hina yelled, in a minute at least three forth of the black spear crew under her threw off their Marine hats as they yelled a battle cry and switched from fighting the pirates to fighting their once fellow Marines.

"Lu-chan… will you accept Hina as a part of your crew? Officially accept Hina as a part of the Straw Hats?" Hina asked as she judo flipped one Marine over her shoulder, only for him to be knocked out cold by a punch to the head from Fullbody, who had thrown away his Marine hat the minute Hina told him to.

"Of course! The more the merrier and I'd love to have more Nakama period! I'll accept almost everyone in my crew!" Luffy said grinning brightly as she drop kicked a Marine guy in her way.

"Thank you Lu-chan. First though….GARP! HINA IS GOING TO MURDER YOU FOR LYING TO HER!" Hina yelled up at Garp, haki imbedded in her voice.

"What did I do?" Garp shouted down at her confused. Hina's next shouted words caused the whole battle to stop, everyone except for her and Luffy freezing in shock.

"YOU TOLD HINA LU-CHAN WAS DEAD JUST AFTER SHE WAS BORN! YOU STOLE HINA'S DAUGHTER FROM HER THE MOMENT SHE WAS BORN!"