(Intro)

(Intro ends)

We find Nami, Nojiko and Daisy at the medical room where Nojiko is seen laying in bed with bandages wrap up after she got shot while Nami sat with her with also her arm wrap up from the stab wound she did to herself.

Nami thinks back to what she has said to Y/n and how he try to tell her about Arlong just messing with her and she didn't listen and hurt him. In truth she does have feelings towards him but didn't want anyone in her life to get harmed.

She sat there and wanted to take back what she told him and wanted to apologise but she doesn't know if he can forgive her after what she did. Then Daisy gets her attention and turn to her as Daisy purred on her arm which made Nami smile a bit, seeing that Daisy has never lost faith on her and if Daisy hasn't lost faith, so can Y/n and the rest.

Then Nojiko takes Nami's hand which Nami turns to her as Nojiko smiled at which Nami also smile as the two sisters smile and decided to go to Arlong Park and help Y/n and the strawhats.

(Meanwhile)

At Arlong Park we see Y/n standing over the two dead foshmen that he killed in front of Arlong and his crew as Arlong's crew were in shock and frightened as this gunslinger just straight up kill two fishmen without any hesitation.

Genzo and the other village people were standing behind him in shock while Genzo was about to in only to be stopped by Johnny and Yosaku.

Johnny: Sorry but we can't let you in.

Genzo: What?! He's gonna die if he fights Arlong alone!

Johnny: Have you forgotten who he is?

Yosaku: He's the Unkillable Gunslinger who will free you all from pirates who have taking over your home. He slaughter all enemies without any hesitation and has no fear within him. Only rage. He's the most unstoppable person that anyone has ever seen!

Arlong slowly forms a fist in rage and then he yells at his crew.

Arlong: (angry) KILL HIM!!!

His crew charges towards him while Y/n pulled out his grenade launcher and fired a singal shot and quickly pulled out his pistol and fire at the grenade. This cost a explosion that blows up all the fishmen and then Y/n launches and takes on Arlong's powerful crew all on his own.

Arlong and his other crew just stood there in disbelief as they watch as a singal human take on all of Arlong's best crew and brutally beaten them up. Snapping their legs and arms, ripping off jaws and shooting their heads as blood splatted onto the floor or onto Arlong's crews faces.

They were slammed into walls, slammed onto the floor, hit their neck onto the pillars and he even grab both arms and ripping them apart. He then use the two arms claws to slash at them as he continues his brutal killing spree.

The last Arlong's crew drops dead onto the ground while Y/n stood over dead bodies holding on arm from one of Arlong's crew and then dropping it onto the floor and glares up at Arlong.

Then one fishmen launches behind him only to be kicked by Sanji as Arlongs fishmen hit the floor while Sanji stood next to him taking out a cigarette.

Sanji: Hey asshole, save some for me will you?

Y/n: Just leave Arlong to me and me alone.

Sanji: Man your annoying to deal with.

Y/n ignores him and walks off while Luffy, Zoro and Usopp arrived as they walk by the dead bodies of Arlong's crew.

Usopp: (scared) Um guys remind me not to piss him off.

Zoro: (surprised) Man he took them on all by himself. Gonna say, I'm kinda jealous.

Luffy: (smile) Wonder we can eat them?

Usopp: That's kinda disgusting to say!

Y/n approaches Arlong as he glare at him while Arlong gets up and tells him.

Arlong: You think this was it! This is nothing!

Suddenly more Arlong's crew burst out of the waters while Arlong grabs Y/n and throws him towards the wall. He slammed into the wall and hits the ground. Arlong launches towards him but Y/n move out of the way as Arlong made impact to the wall and breaks through it.

Y/n draws out his twin Pistols and waits for Arlong to come out. Seconds later and Arlong bursts out of the wall next to Y/n and he bites him in the waist and rip a chunk of hid flash off of him.

Y/n leaps back as Arlong begins to eat a chunk of hia flesh but this pain doesn't phase Y/n as he fire his twin Pistols at Arlong which he dodges while charging towards him and he tackles him through the walls of Arlong Park as he fights inside while Luffy and the others hold their ground.

Sanji: Say you think Y/n got this?

Luffy: (smile) Sure he can. He's Unkillable after all.

Luffy turns towards the charging fishmen and then he swings his leg that stretched out and lands a kick at all five fishmen. Sanji just puff a smoke from his cigarette and leaps up and lands some deadly kicks while Usopp quickly dodges the fishmen attacks and use his explosion pellets to take out the fishmen while Zoro cuts them down with his single sword.

Genzo the village people watch this in shock while Nami, Daisy and Nojiko arrived to see the battle.

Nako: (noticed the two) What are you two doing here?! You should be resting?!

Nami: Where is Y/n?

Nako was about to answer when a explosion goes off within the building of Arlong Park. Nami hopes that Y/n will defeat Arlong while we see Y/n being tossed through several walls and crashes into the room.

He gets up as we see his clothes his torn, bits of his armor is cracks, the visor of his mask is cracked and blood is coming out of his body as Arlong bursts into the room and lands a punch at his stomach but this doesn't phase Y/n as he just lifted his fist and tossed him across the room.

Arlong gets up while Y/n rushes towards him with his knife and then he stabs Arlong in the stomach. Arling let's out a roar as Y/n keeps on stabbing him many times until Qrlong lend down and bite his head and ripped it off. He kicked him across the room and he slammed him the wall.

Arlong spits out his hat while Y/n's brains was exposed but quickly it got healed as Y/n gets up as Arlong said.

Arlong: Your harder to beat then I thought. Are you really a human?

Y/n: Wanna find that out?

He respond by ripping out his teeth one at the time as his teeth immediately grows back and he using the two sharp teeth as his weapons as he launches towards him.

Y/n move out of the way as Arlong punches through the wall while Y/n lands a kick at Arlonh in the face. This made Arlong mad as he lands his teeth at his leg and throws him all across the room. He slammed him everywhere, trashing and breaking everything until he tossed him towards the ceiling as he breaks through the ceiling until he breaks through and lands into a room.

He gets up and looks up only to see maps everywhere. He gets up and looks around of all the maps everywhere while Arlong crashes through the room and lands onto the room.

Y/n: Is this.....Nami's room?

Arlong: (smirk) You noticed? After she joined my crew I make this place her room to work on maps and I must say she did a good job.

Y/n walks up to a chair where Nami sat as he grab the back of the chair and suddenly felt like this is where Nami was force to work and can feel the sadness and hopeless that Nami have been through for years as Arlong goes on to say.

Arlong: (smirk) Now you see, Nami is never apart of your crew but me and me alone. I give her all of this which means I own her. I didn't care the deals we made to free her home, as long I'm still around I will make this island hell to live on! And with the help of the maps Nami created, I can take over more islands and soon I'll be the greatest pirate in all of the sea! THE WORLD WILL BE IN MY HANDS!

Y/n:.......You said Nami is yours?

Arlong: (smirk) Huh? Yes. As long she listens to me, she is my property and she will have to listen to-

Suddenly Y/n throws a desk towards the window, breaking it and seeing falling ti the ground as everyone outside watch as it crashes onto the ground.

Nami realise that they were in her room and then hears more explosion within the room as Y/n throws grenades, and incendiary grenades as Arlong watched in horror as the maps all around him gets destroyed a burned as Y/n let's out a yell in his rage.

Y/n: (Rage) YOU DO NOT OWN NAMI! NOBODY WILL NOT OWN NAMI BECAUSE SHE DESERVES HAPPINESS!!!!

Nami heard his yells and soon tears started to form as she cover her mouth hearing his words while Arlong in rage charges towards him and slamming him into the wall. He then rip off his mask and crushing it and tossing him aside as he slammed Y/n into the wall.

Arlong: (angry) How dare you! I would have been the greatest Emperor in all of the sea with those maps! What kind of human are you to challenge me!

Y/n: (angry) A human who will fight for the innocent, a human who will punishes the evil, a human who will make pirates and corrupt marines pay for harming of making innocent peoples lives worse! I am a human who will challenge those who dare to harm the innocent! I am the grimm reaper to all my enemies! I am what all pirates will think off before they harm innocent lives! I AM Y/N L/N, THE UNKILLABLE GUNSLINGER!!!!!!!

(Besst mode music start)

Y/n kicks Arlong back which cost him to slide back and before he can attack him Y/n dashes towards him, grabbing him by the neck and then immediately and quickly slammed him into the ground, the impact shook the building and formed a crack that suddenly broke and the two fall to the next floor below them.

They made impact as Y/n gets on top of him and punched him in the face over and over. His beast takes over as he lands some punches that cost the floor to forms cracks and then it open and they fall to the next room.

They break through several floors as Y/n keeps punching Arlong more and more witheach punch gets harder and harder.

Soon the two crashes onto the ground floor as Arlong pushes Y/n off him and slowly gets up. Y/n noticed swords so he took some and then he throws two of them towards Arlong and they impaled Arlong's legs. Arlong roars in pain and then two other swords came flying and impaled Arlong arms.

He let's out a roar filled with rage while Y/n launches towards him with one last sword and he impaled it through his mouth and the blade came out at the back of the head.

Then Y/n grabs the blade at the other end and he starts pulling it as he keeps pulling and pulling as Arlong can feel his neck is about to rip and it did as Y/n let's out a roar of rage and finally rip off Arlong's head out of his body as blood came pouring out of his body as his body collapses onto thr floor while stood victories with the head of Arlong in his hand as he defeated the leader of his Arlong Empire.

(Beast mode music ends)

Luffy, Sanji, Zoro and Usopp took out the last of Arlong's crew as we see them injured when the door open and everyone watched as Y/n came out with his clothes torn, his face exposed and the head of Arlong in his hand.

This shocked everyone including Arlong's crew as he tosses he heaf in front of his crew seeing that he killed him. Y/n glares at them all and in fear they dive into the water qns swam away.

Genzo and the villager couldn't believe Arlong is dead so they cheered it victory. Luffy smiled seeing that they have won as Genzo and the others chant Y/n for ending Arlong while they also cheer for Luffy and his crew.

The village people came over to Strawhats and thanking them and they also thanking Y/n the most of ending Arlong. He node and then noticed Nami as he walk up to her. The two of them look at each other as Nami then hugged Y/n which he hugged her back.

Nami: Thank you........Thank you.

Y/n:......Your welcome.

Everyone was celebrating their victory and freedom when Nezumi and his marines arrived and aim their guns to them.

Nezumi: Everyone free!

They all turn to see him as Y/n sees this and approaches Nezumi as he approach him and ask him in an aggressive tone.

Y/n: The hell are you doing here?

Nezumi: (smirk) I'm here to collect the stolen treasure that Arlong has kept as well all the treasure at Cocoyasi Village!

Y/n: I see. What if we don't comply?

Nezumi: (smirk) Then we are force to arrest this village. Or....we could just kill everyone here and-

Bang!

suddenly Nezumi collapse onto thr floor screaming as his leg was blown up as we see Y/n with his shotgun as he blown up Nezumi's leg off as he then picked up Nezumi by the neck and shot him a glare which made him scared for his life.

Y/n: I just torn the head of Arlong and killed most of hid best crew. If you really want to end up just like Arlong and his crew, then you better leave here and never come back.

The marines aim their rifles at him but he shot them a glare which cost all marines to be scared and didn't dare to even touch the trigger. Nezumi was scared as a mouse as he comply and then Y/n drops him to the ground as his marines picked him up and they carry him away as everyone watched Nezumi and his marines walk away.

Genzo: (smile) Hey everyone! Let's celebrate our heroes by throwing in a party! Let's give these heroes the best party ever!

They all cheered as Y/n stood there for a moment as he never someone to celebrate for him in his life. Luffy wrapped his arm around Y/n and tells him.

Luffy: (smile) This is going to be the best!

Y/n: Yeah.....same.

Nami is seen as she smiled while she thinks to herself.

Nami: (thought) Y/n.......Thank you.....for everything for me and my home. Thank you.....for making me happy again.

To be continued......................................................