Naruko is not from the shinobi world she is born in the One Piece world (that means no chakra). She will have all three types of Haki and is a master of Rokushiki (that includes the secret/ultimate technique rokuogan). She is a carbon copy of her mother Kushina (only 6'2" instead of 5'4") but with her fathers eyes (shape not color). Do to the devil fruit she ate Naruko is somewhat immortal. Because of the fruits power Naruko is over 250 years old (she is forever 22).
I have two ideas for a devil fruit to give Naruko, a paramecia and a logia. You can choose which one you like best for the challenge.
The logia type devil fruit is called the 'Shi Shi no Mi' (Death-Death Fruit), it's power is basically the same thing as the Espade Barragan only it can also rejuvenate as well as rot things (basically she as mastery over element of life and death).
The paramecia type devil fruit is called the 'Kami Kami no Mi' (God-God Fruit), it's power is purely defensive. It grants it's user the ability to heal/regenerate from 'any' injury. So long as there is even 'one' cell of Naruko still alive (think Majin Buu levels of regeneration) then she can't die and will regenerate. As a contingency plan Naruko always keeps a piece of herself (usually her heart) hidden in a special box in her room at her main base. In case someone actually manages to kill her, she will just regenerate back at her base.
She was also the third highest ranking officer of "The Roger Pirates' and is the only other person other than Silvers Rayleigh that knows the location of One Piece as well as how to get to Raftel. Roger before he turned himself in gave the ship 'Oro Jackson' to Naruko since Rayleigh wanted to retire and she was going to keep being a pirate (mostly cause the World Government wants her dead because she knows to many secrets) the ship was now hers.
Naruko's home base in the New World is an island that is just as legendary and hard to get to as Raftel. It's called Pirates Nest (I got the idea from Suikoden 4). Naruko is as powerful as Whitebeard was in his prime (Whitebeard in the War on the Summit was not at his best. Even his own division commanders said he was only at 50% if even that). Her personality is a combination of her fathers genius, her mothers loyalty to friends and family, the analytical and strategic prowess of a Nara (without the lazy) and the cold calmness of Itachi. (without the emotionless monotone speak. Naruko still has emotions she just knows how to stay calm under any type of pressure and how to control her emotions.) Naruko is also a master swordswoman and was the one that taught Dracule Mihawk how to fight.
IMPORTANT INFORMATION
The Yonko (four emperors) are now the Goko (five emperors)
Ouroboros Pirates
Naruko-Captain (Shinku-Shi Megami/Crimson Death Goddess) Bounty 1,700,000,000 Berri
Lightning (FF-13)-Vice Captain/1st Division Commander Bounty 980,000,000 Berri
Walter C. Dornez (Hellsing)-2nd Division Commander Bounty 935,000,000 Berri
Brahms (Valkyrie Profile 2)-3rd Division Commander Bounty 900,000,000 Berri
Julietta Sakamoto (Air Master)-4th Division Commander 780,000,000 Berri
Dizzy (Guilty Gear)-5th Division Commander Bounty 880,000,000 Berri
Jack the Ripper (Fate/Stay Night (she's female))-6th Division Commander Bounty 800,000,000 Berri
Medusa (Fate/Stay Night)-7th Division Commander Bounty 875,000,000 Berri
Neliel (Bleach)-8th Division Commander Bounty 880,000,000
Tier Harribel (Bleach)-9th Division Commander Bounty 870,000,000 Berri
Frankenstein (Faty/Stay Night (she's female))-10th Division Commander Bounty 820,000,000 Berri
All Division Commanders have the strength of a Marine Admiral.
The Goko
Naruko (The Crimson Death Goddess) Bounty 1,700,000,000 Berri (her bounty is so high due to the knowledge she has, her 'Devil Fruit' power and her connection with the 'Roger Pirates')
Edward Newgate (Whitebeard) Bounty 1,450,000,000 Berri
Red-Haired Shanks Bounty 1,100,000,000 Berri
Kaido (The King of Beasts) Bounty 1,150,000,000 Berri
Charlotte Linlin (Big Mom) Bounty 1,125,000,000 Berri
(After Whitebeard Dies)
Marshall D. Teach (Blackbeard) Bounty 1,200,000,000 Berri
Other Famous Bounties
Silvers Rayleigh Former Bounty 1,250,000,000 Berri
Gol D. Roger Former Bounty 1,625,000,000 Berri
Naruko's Bounty with the Roger Pirates 1,155,000,000 Berri
Shiki the Golden Lion Bounty 1,400,000,000 Berri
Monkey D. Dragon Bounty 1,380,000,000 Berri
Pairings(not the main focus of plot just there for entertainment)
Naruko/Jewelry Bonney/Medusa/Lightning/Dizzy
Jack the Ripper/Naruko (mother/daughter bond only (look her up on to understand))
Luffy/Boa Hancock
Zoro/Tashigi