Amongst the normal people within the world, there are also the supernatural with people using candle wax as a weapon to be born a fishman, there is a place in the world for everyone; though that is true, there is another world, a world of infamy, the world of pirates where one man stands above all, known as Gol D. Roger, the Pirate King, thanks to him a new era of piracy has been born in search for the legendary treasure he has left for the next True Pirate King. 

Now we see a crew sailing the Grand Line, their pirate flag waving proudly through the wind, a ram head at the front with a black haired straw hat wearing male sitting on it; this ship is known as the Going Merry and it is ridden by the Straw Hat pirates, the consist of the captain Monkey D. Luffy, the swordsman Roronoa Zoro, the navigator Nami, the sharpshooter (god) Usopp, the pervert cook Sanji, the doctor (and baby) Tony Tony Chopper and their latest addition the archeologist Nick Robin, they are heading to Jaya in hopes of finding out about Sky Island after finding a ship that fell out of the sky and searching through it. 

"Nami! How long will it take to get to Jaya?!" Luffy asked. 

"2 days without interruption" Nami said as Luffy looked back at the sea, suddenly spotting something moving and calling Usopp's attention. 

"Usopp! Can you see that moving thing?" Luffy asked pointing ahead, as Usopp pulled down one scope and adjusted his scope, looking to where Luffy was pointing to see a small boat there with someone inside.  

"A small boat and someone in it" Usopp said. 

"Let's grab the person" Luffy said, getting up, pulling his arm back and throwing his arm at the boat, grabbing the person by their shoulder and pulling the person on board, slamming their head on the mast. 

"Luffy! What was that?!" Nami, Sanji, Robin and Chopper asked running out of where they were; stopping to see a male with blonde hair and dark skin knocked out on the floor with a large katana and a bag. 

"Luffy who is this?" Nami asked. 

"Don't know, I saw him and was going to ask if he had any meat" Luffy asked. 

"You idiot, how does your brain work?" Nami said angrily, hitting Luffy over his head. 

"I'm sorry" Luffy said as that disturbs the green haired swordsman. 

"Oi! What's going on?" Zoro asked, finally waking up, looking at the new person here. 

"Who is that?" Zoro asked. 

"We don't know" Chopper said as Usopp fell trying to get down only to fall off, but Robin used her Flower Flower fruit to catch him with the hands coming out of the floorboard. 

"Thank you Robin" Usopp said. 

"No problem, Long nose-san" Robin said.  

"Who is this?" Usopp asked. 

"We don't know" Chopper said as Sanji picked up the bag, opening it to check the contents, seeing 3 bottles of water, a black vest, mouldy/spoiled fruit. 

"Seems our intruder is living off of bad food, I'll go make something" Sanji said taking a draw, blowing out, walking to the kitchen and dropping the bag as Robin looks at the bag to see a piece of paper hanging out, grabbing it and looking at it. 

"Demon Kid, 120,000,000 Beri" Robin read. 

"Now this is interesting" Robin said. 

"What's that?" Nami asked as Robin showed them. 

"EEEEEEH?!" They all exclaimed, shocked at the person they have on board. 

"That's a lot! Why me!" Nami cried. 

"Wow! He's got a bigger bounty than me" Luffy said looking at the bounty. 

"Let's wake him up" Luffy said as Chopper reverse hid behind Usopp. 

"He must've done something really bad to get such a bounty" Chopper said. 

"I remember him, I fought him and won" Usopp said. 

"Wow! You're so cool Usopp!" Chopper said as the person stirs in his unconscious state scaring Nami, Usopp and Chopper, going a certain distance to be safe; soon enough the person wakes up. 

"W-Where am I?" The stranger asked. 

"Hey Demon Kid, you have a high bounty, how did you get it!" Luffy asked as the person crawled back only to hit the mast. 

"Where am I? Who are you people?! How did I get here?!" He asked, looking around in fear and confusion, as Robin squats to his eye level. 

"We're the Straw Hat pirates, our captain here saw you out on the sea in a small boat and he brought you here" Robin explained before introducing everyone, meanwhile he was distracted by her voice and beauty. 

"Angel" Jeff asked. 

"Who are you and How did you get out there?" Robin asked looking back at him, as he was brought back, causing him to come back to reality and hear the question. 

"M-My name is Jeff, but everyone calls me Demon Kid, as for how I'm here, I was just running from a giant turtle then some giant angels with spears appeared in the sky them I rowed out of there, then from your story I ended up here" Jeff said as Sanji walks out with a plate of food, Luffy tries to eat it but is kicked in the face; while the 3 scared ones come out. 

"Here, you must be hungry and those fruits must be really bad" Sanji said. 

"I-I-I can't take this" Jeff said as Sanji sighs and puts it down, trying to not accept but the smell made him give in, grabbing the plate just when Luffy was about to grab it and eating. 

"Thank you" Jeff said, crying as Sanji smiles. 

"No problem" Sanji said as Jeff wiped away his tears and started eating. 

"This is the best meal I've had in a long time" Jeff thought as Robin chuckled. 

"You have a katana, face me when you're done eating, though I will check your blade" Zoro said as Jeff gets jumpy, grabbing the sword from the green hair while dropping the food. 

"You can't open it, you'll die" Jeff said. 

"What? That's dumb" Zoro said pushing Jeff back, unsheathing the blade with it left of a black and red energy off of if. 

"See, no-" Zoro said before freezing in place. 

"Zoro! What did you do to him?!" Usopp asked. 

"I didn't, that blade is cursed I am the only one who can use it" Jeff said, grabbing the blade from him, as Zoro turns pale before Jeff looks for something within the blade before reaching into the blade, shocking everyone, even Luffy who was eating Jeff's food. 

"What is that blade?" Nami asked as Jeff's right eye turns black and neon green, soon enough he pulls out a blue flame like energy, walking up to Zoro and shoving it into his mouth. 

"Gah!" Zoro exclaimed before breathing heavily, falling on one knee. 

"Zoro! What happened?" Nami asked. 

"So many souls, too many souls" Zoro said. 

"This blade is a cursed blade by the name of Shin' en, it is a dark abyss that holds the souls of many people" Jeff explained as they looked at him in awe, then he bows. 

"I'm so sorry to have caused you so much problems, please forgive me; I'll drop off at the next island and find me way" Jeff said. 

"At least he's apologizing" Nami said. 

"What do you think of the apology Luffy?" Usopp asked. 

"Join my crew" Luffy said. 

"What?!" Everyone exclaimed in shock.