One piece: Journey with a system

Year-1513…

Marineford…

The whole ocean in front of the Marineford is now frozen into ice till 120 meters from the water surface till the gate of Justice and hearing the disruption on the ice as well as getting surprised of the sudden disturbance created because of the frozen Ocean surface Marines are unable to get in and started moving in the direction of the commotion curiously wondering what is all this about and found out a Rear-Admiral Momousagi standing against a young man in a black suit holding her sword as if she is going to cut the boy into pieces while her opponent is looking at her with a neutral face making everyone what he is thinking or if he is even thinking anything at all because he is a little too relaxed when even they are tensed looking at Momousagi's angry face.

After talking with their colleagues they get to know the young man is a newly promoted Commodore and Rear-Admiral is testing him before he joins her. \t

Gion or Momousagi is a slender woman with red lipstick, long curly black hair that is tied back, and a mole on the right side of her face below her mouth. She is wearing a Marine coat on her shoulders like a cape and her sleeves have pink cuffs and the epaulets are also pink.

Her Marine coat has a hood, but now it is down.

Underneath, she wore a short-sleeved pink shirt, with a frilled collar and an open neckline that exposes her cleavage. She wearing dark brown shorts and black heels. She also possesses a black spider tattoo on her left thigh.

In her hand, she is holding a long sword that is called "Konpira"

Opposite her is the newly promoted Commodore Sun Ryo a 15-year-old young man with half her hight. Currently, he is wearing a black suit and pant his undershirt is white and his tie is also black his black boot is shining under the sunlight and in his hand, he is holding a metal sword that he has created using his devil fruit ability.

"We won't know until we fight maybe your sword will break instead of mine. " Ryo said with a smile while thinking inside 'Although she is showing she is angry but looking at the way she is standing and speaking I sure she is calm which means she is also observing me as I am.

Which means she is trying to read me or want me to make my move first so she can counter me, but… '

"I see you you are as confident as before but don't forget you are forbidden in using your devil fruit anymore which means using it will mean you lost.

As for my "Konpira" do you think it is trash like you are holding to break in a fight against just you? " Gion said with a sneer looking at him before pointing her sword towards him and saying to him "This here my "Konpira" is one of the famously named swords unlike your trash that you just created and for your information I have fought against the strongest swordsman of in the word and it is still the same as before.

So tell me how it can break in a fight against a brat like you? "

"Maybe he wasn't taking a woman seriously or maybe he didn't hurt a beauty so he went easy on you or he is just so so. " Ryo chuckled looking at her while thinking 'Her grip became stronger maybe I have succeeded in making her angry. '

Hearing him looking down on her Gion's grip on her sword became strong but hearing him calling her beauty she felt a little happy for the praise but insulted at the same time but looking his chuckling she calmed down before chuckling herself and asked"If you think he is so so why don't you go challenge him?

Maybe you will become the strongest swordsman in the world. "

Pretending to be inlighted the smile on his face widened as he said looking at her in the eyes (He is shorter than her but because of the distance he didn't need to bend his bead upward.) Ryo said "You are right and I think I should go and challenge him.

Maybe my beautiful Rear-Admiral's advice will bring me the title of the strongest Swordsman. "

"Who is yours? " Gion said while swinging her sword towards Ryo as a sword ray shoot from the blade and went towards him while he just moved out of the swords ray saying "Soru".

After vanishing from his spot he arrived above her while shouting "Hiten Mitsurugi Ryu style: Dragon Mallot Flash(Ryu Tsui Sen) " and then strikes his sword down hard from above towards her head.

"Finally decided to attack. " Gion said with a smile while putting her sword in front of Ryo's stopping his attack easily.

Although she stopped his attack easily the ice beneath her foot started cracking and putting a little more pressure she pushed Ryo flying before saying "Nice move but that won't work on mem " before sending another sword ray in his direction before he can stabilize himself in the air.

As he has lost he failed to strike her and went flying losing his balance and knew he will not be able to avoid the sword ray in time so instead of escaping he decided to counter and twisting his body and kicking the air using moonwalk he shot towards Gion doing a sideways slash at the sword ray while coating his sword in invisible Haki and shouting "Hiten Mitsurugi Ryu style: Dragon Wind Up Flash (Ryu Kan Sen). "

Looking at Ryo approaching at his direction before cutting her sword ray easily before thinking 'although his sword style is unknown to me I am sure it is very profound and even better than my Sutāraito style (Starlight Style) but unfortunately he is yet to mater it properly. ' and jumping up with a matching style to Ryo she shouted "Sutāraito Style: Kibō no Hoshi (Rising star) " and collided with Ryo in mid-air sending him flying and she also went flying backward but both of them landed on the ice at the same time without getting an upper hand against one another.

"You are not as bad as I thought. " Gion complemented looking at Ryo who is standing opposite to her thinking 'Although he is not good at the swordplay however he is covering his lacking with his superior strength. '

"You are also stronger than I thought. " Ryo said with a smile while thinking 'Damn she is strong with a sword when I don't use my devil fruit and looks like fighting her my skills with a sword is improving faster than ever. '

"My turn. " Gion suddenly arrived in front of him before calling out and slashing down at him " Sutāraito Style: Nagareboshi (Falling Star). "

"Useless. " Ryo said before making a giant blow against the ground, causing massive airwaves and ice flying towards Gion and shouted "Hiten Mitsurugi Ryu Do Ryu San or (Ground Dragon Flash). "

As the Ice and airwaves flew towards her disrupting her attack she was forced to slow down and by the time she cuts through Ryo's attack he has already moved far away from her and looked at her with a provoking smile making her battle desire skyrocket and lunched towards him with extremely fast speed.

From afar some of Gion's subordinate said with awe "That kid is really amazing he is fighting against Rear-Admiral on the same ground. "

Sengoku looking at the battle smiled and said "The kid is really happy fighting against her. "

"They are both enjoying I think. " Zephyr said with a chuckle.

"They have destroyed almost half the ice you. " Kuzan said with a smile.

"The kid is gonna become a good force of Justice one day. " Sakazuki said with a smile while putting a cigar in the mouth and lighting it with a magma finger.

"Maybe I should also join them? " Borsalino said with a smile receiving a scolding from Sengoku and getting prohibited in joining them.

"Maybe the kid will be able to help her. " Tsuru said with a sigh.

At the battlefield of Ice Gion and Ryo are breathing heavily after hours of battle and have countless small cuts all over their body and some parts of their clothes have also dropped somewhere unknown.

Currently, the justice coat of Gion is missing from her back as well as Ryo's pant has become short pant losing the part from his thigh and the upper suite has long vanished only left behind parts of his white undershirt as he said looking at Gion "I think it's about time we finish. "

"Sounds good to me. " Gion said as they both took a swords stance as Gion shouted " Sutāraito style: Bakuhatsu suru Hoshi (Exploding star). " and moved towards Ryo with an extremely fast speed only the Group of Admirals can see with their Haki.

Ryo also moved with his fastest speed breaking his limit as well as some of the ice under his feet before vanishing and shouting "Hiten Mitsurugi Ryu style: Ryūsōsen (Dragon Nest Flash). "

After vanishing for a moment both of them arrived in front of everyone standing opposite of each other as Ryo said "I should get a new sword. "

"You should practice more Hali kid. " Gion said as she falls on the cold ice and loses her consciousness.

"You don't need to remind me. " Ryo said as he falls on the floor and blood started falling from his front and loses his consciousness as his sword shatters into pieces.

"It was a draw. " Zephyr said with a smile.

"The kid did better than I expected without his Devil fruit ability. " Sengoku said with a laugh as he went beside Ryo and Tsuru beside Gion before saying "If the kid had learned to coat himself black maybe he would have been fine like Momousagi. "

"What are you guys doing here? " Sakazuki snapped at the Marine who were watching the battle earlier.

"I will melt the ice. " Kuzan said before walking towards the ocean.

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A.N: I wasn't able to find Gion/Momousagi's sword style so I created one myself comment if you know her sword style.

Ryo has never used his devil fruit ability against her in the second round as he wanted to know how strong he will be without using his devil fruit power and only by using a sword.

Ryo is not as strong at Momousagi with a sword and he would have lost very badly if he didn't have superior strength because of his highbred bloodline from Mink and Fishman.

Speaking of Fishman he has yet to transform or unlock his Water Dragon form.