July hasn't been a good month for me, so I took a hiatus because of personal problems. But now that its August and everything's settled I can keep writing, and I'm a huge fan of Boku no Hero Academia and decided to make a crossover with One Piece. Enjoy.

Inko Midoriya waited in the waiting room of the hospital with tears streaming down her face. She and her son were simply out shopping when a bomb went off in the mall they were in. They were in a clothing store when it happened, when she opened her eyes and managed to clear her vision she saw her son-her pride and joy was lying on the ground covered in blood trying to protect her. She was his mother! It was her job to protect her son, not the other way around! How could she let this happen to her baby?! When they were found by the medical team they had to forcefully separate her from her unmoving son's body, kicking and screaming.

So here she was now, waiting out in the waiting room while her son was being prepped for surgery. He had lost a lot of blood and needed a blood transfusion, she immediately offered but she wasn't a match. She began to pray that someone, anyone would save her son!

"Inko Midoriya?"

Hearing her name be called she lifted her head and saw a young man stare down at her. He was a slim man of a relatively tall height. He has faint shadows right under his grey eyes, he was wearing a northern-style fur hat, which is white and has a spotted pattern along the bottom and the bill. He has short dark hair, a majority of which is obscured by his hat, save for his sideburns and small goatee. She noticed he was wearing a black hoodie, which had a yellow smiling face in the center. The other thing she noticed was the tattoo on both his hands and fingers, but what stood out was the one that spelled DEATH.

Standing next to him was a tall white polar bear wearing an orange jumpsuit was carrying a cooler in his hands.

Who was this man?

"Ah, yes!" She finally replied after observing him for so long, "Who are you?"

"Trafalgar Law," Law replied, "I heard your son needed a blood transfusion and volunteered to give him some of mine."

"Eh, r-really?!" She grabbed both arms hoping this wasn't a dream.

"Yeah. When I looked at your sons chart I noticed we had the same blood type and volunteered to give him some of mine, even though those idiots told me not to." Law said dryly.

Inko let go of him and bowed, "Please! Please save my Izuku!"

Law stared at her bowing form, "I plan on it." He told her walking past the woman and going into the ICU room. The white bear turned to the woman before going inside the ICU.

"Don't worry, Captain knows what he's doing since he's a doctor." The white bear told her before following after Law.

Inko stood there as she processed what the bear just said. That man's a surgeon? he certainly didn't look like one. But even so, he promised to save her son no matter what so she would have faith in his skills.

'Please...please save my Izuku!'

ICU Intensive Care Unit

Law stare down at the boy, seeing the various wires and bandages all over him covered in blood. This kid was a mess. It was a wonder he was even alive to begin with especially since he didn't have a "Quirk" as they call it here. When they first arrived here by the port he decided to see how the medical stuff here works. Whatever Straw Hat and the rest of crew did on their own free time was no business of his. Truth be told, he didn't even get permission from anyone to be in here but when he heard a kid was sent to the ICU his curiosity got the better of him. According to the kids records he was what they called a "Quirkless," meaning one without a Quirk. From what he gathered, people without Quirks are seen at the bottom of the food chain, and this kid is no different. But there was something else that interested him about Quirks, you can transfer a quirk through various methods as long as the person has the DNA of the individual. Giving the kid some of his blood won't do anything, so he'll give the kid some of his DNA and see what happens. But he had to say, he was impressed this kid was still alive after everything.

"Captain?"

Law smirked, "Interesting. This kid should be dead but he's hanging in there albeit by a thread anyway."

The white bear looked at Izuku, "Are you sure about giving your own blood to him, captain?"

"Yeah. Just giving the kid some of my blood won't be enough, so I'll transfer some of DNA to him. I'm kinda interested to see if this kid'll stay Quirkless or gain the same power as me," Law smirked, "Bet he'll surprise the hell out of 'em, right Bepo?"

Bepo nodded, "Yes, captain."

Law rolled up his sleeves, "Let's get started then." He then felt something grip his jacket and was shocked to see it was the kid. Grey eyes locked onto green ones, there was something about that look the kid was giving him that made him think about himself for a minute.

"Captain!"

Law ignored Bepo and kept his gaze on the kid, "You wanna live, right?" A grip was his response as well as ragged breathing.

He snorted.

Yeah, this kid was interesting.

He smirked, "Time to operate."

That was how the Quirkless boy met the Shi no Gekai (Surgeon of Death). Whether their meeting was fated or a coincidence is unknown.

Three months past after the bombing incident and Izuku's surgery was done at the hands of Trafalgar Law. Inko was so grateful to the man that she insisted on inviting him to dinner as a thank you for saving her son's life. Though Law protested he eventually gave in knowing the woman wouldn't stop pestering him until he said 'yes' After the kid got out of the hospital about four days later, Inko practically dragged both Law and Bepo to their house to eat with them. Izuku had taken an instant liking to both Law and Bepo, proven by how the green haired boy would climb on the white bear's back and play with his ears. Bepo took it like a champ though and never once complained. Law chatted with Inko while Izuku played with Bepo in the living room. The grey-eyed captain would often eye Izuku, waiting to see if the kid would awaken the same power as him. After giving the kid some of his blood he waited for him to heal so he could give the kid some of his DNA. As gross as it sounds, the only thing he could think of was to yank some of his own hair out and put it in the kids soup when he wasn't looking. The kid ate all of it and Law noticed the hair he put in wasn't in the bowl, meaning it was already inside the body. All he had to do now was wait, but then again there was no guarantee that it would work though.

Not even two weeks later when he met up with the mother again and she yanked him inside the house did he finally get the results he wanted. Once he stepped into the living room he saw it was covered in a blue circle.

He couldn't help the smirk that appeared on his face.

Guess it worked after all, in the end the gamble paid off. Things just got more interesting.

Inko and Izuku sat down on the couch as he explained to them what was going on with the kid after help cancel Rūmu (Room).

"So...its not a Quirk?" Inko questioned.

"No, instead of calling it a quirk its more like a Devil Fruit power," Law told her, "Its stronger than quirks."

"Stronger?" Izuku blinked.

Law looked at Izuku, "Yeah, where we come from there's no such thing as Quirks, only Devil Fruits. Mine's called the Ope Ope no Mi, in translation it means "Operation."

Inko leaned forward, "Then these Devil Fruits have different abilities and gives these abilities to the users who eat them?" She didn't like that it was called "Devil Fruit" of all things, but she ignored that in favor of wanting to know what effects it would have on her son.

"Basically, since I gave the kid some of my DNA he now has the same powers as I do. That blue sphere you saw is what I like to call Rūmu (Room)." He explained.

"And what does that do?" Inko asked.

"It allows me to create a spherical space around a target," he began to explain, "Like me he can control whatever's going on in the circle, hell he can even make it a big as he wants but it takes more concentration."

Izuku stared down at his hands in awe. He didn't care that this power wasn't a Quirk and instead a Devil Fruit ability. An ability given to him by the very same man that saved his life.

Law stared at the boy who was either lost in thought or was admiring the fact that now he has powers like everybody else. Truth be told, he was still surprised his gamble had showed any progress at all but he wasn't one to deny what was right in front of him.

Needless to say, Law still got the results he wanted so he wasn't complaining.

"I have a request, Law-san."

He raised a brow, 'Law-san?'

"What?"

She bowed, "Please...train my son!"

Silence.

Wait...what?

"Hah?"

She raised her head, "I don't want Izuku to suddenly lose control or for him to accidentally hurt someone. Please!"

His eyebrow twitched at the sudden request. This seems like something Straw Hat would get himself into, not him. And those eyes, the eyes the kid was giving him was making it very hard to say no. The real question was why couldn't he just say "no?"

Dammit.

With a sigh he leaned back into the couch, "Fine..."

And just like that, he unwillingly decided to train the kid.

Law rubbed the bridge of his nose as Luffy kept grinning like an idiot like always and the other crew members were just being...themselves. The kid was currently hiding behind him because he caught a glimpse of Brook and promptly hid behind Law but peaked his head out a little as a sign of shyness.

"You've started kidnapping kids now?" Zoro questioned, raising a brow.

A tick mark appeared on Law's head, "No! I was asked to teach the brat!"

"Teach him?" Sanji questioned, puffing out some smoke from his cigarette.

"What are you gonna teach him?" Usopp was confused as to why anyone would ask Law of all people to teach a small kid anything.

Law grunted out a response, "The brat's mother asked me to teach him," he gave them a serious look, "Because he has the same powers as me."

Silence.

Izuku could have laughed at the expressions some of them were making but he was still to shy to act on such an impulse.

"Wha...how...?" Nami was the one to ask.

Law brought the kid forward but kept both hands on the boy's shoulders, "The brat was involved in that terrorist attack."

"The one that was all over the news?" Usopp questioned. After the Straw Hats came here and realized people get their news from the TV they saw the terrorist attack on the news while watching it on a mini TV that Nami got from somewhere. They didn't ask how she paid for it though, if she did at all.

"Yes, there was a report that some people didn't make it and only one person was in critical condition," Robin told them, "The critical patient wasn't named, but it was reported that it was a child."

Brook looked at Izuku, "So he was the one they were talking about. The poor boy."

"But he looks okay now," Chopper pointed out, "So that means Law must've done something, but what did he do to cause the boy to have the same Devil Fruit powers as him?"

Law answered that for him, "He needed a blood transfusion because he lost a lot of it. I looked at the kids files and found out he was classified as "Quirkless," so I gave him some of my DNA to see if he'd get the same abilities as me."

Robin put a finger to her chin, "Interesting. So the properties of this world effects us despite us not originally belonging here."

"What does that mean?" Usopp questioned.

Robin elaborated, "We are what's known as a "new element" in this world. And because of that, this world sought to correct that by making sure we became effected by its properties here."

Chopper was starting to get it, "So you mean, because we're now effected by the properties here, that means if Robin, me, Luffy, and Brook can transfer some of our DNA to anyone here and they'll gain the same powers as us?"

"Yes." Robin nodded, "While its impossible for something like that to happen in our world, its possible here."

Usopp groaned, "This whole thing's giving me a headache."

"Shishishi, its fine, isn't it?" Luffy grinned, "If Law says everything's okay, then its fine!"

Nami and Usopp sighed but otherwise said nothing as Izuku looked over at all of the crew members and gave them a polite bow, "U-Um, I'm Izuku Midoriya! Its nice to meet all of you!"

Luffy grinned, "Monkey D. Luffy!"

"Nice to meet you, my names Nami." Nami introduced herself next.

"My names Chopper!" Chopper smiled.

"I'm Usopp, the King of Snipers!" Usopp introduced dramatically.

"Nico Robin." Robin introduced with a smile.

Sanji took another puff from his cigarette, "Names Sanji."

Zoro crossed his arms, "Roronoa Zoro."

"But you can just call him Marimo." Sanji smirked.

Next thing Izuku knew the two of them were going at it making him sweat-drop, especially since Luffy was laughing at them.

"Yohohoho! Pleasure to meet you, young man. My name is Brook, and if you don't mind there's something I wish to ask of you."

Izuku was still a little scared of Brook but answered anyway, "S-Sure."

Brook walked over to him and bent down a little, "May I please borrow some money?" He was promptly kicked away from him by Nami.

"Don't ask a little kid for money!" She yelled.

Izuku blinked a few times.

Just what is wrong with these people?

"The names Franky and it's super nice to meet ya!" Franky did his trademark pose as he greeted Izuku.

Izuku's eyes sparkled as he stared at Franky, "A cyborg!"

Franky gave him a thumbs up.

Law walked past Izuku getting his attention, "Oi, Sanji-ya! Zoro-ya! You'll be training the kid, too!"

Sanji and Zoro stopped their momentary brawl, looking at Law as though he'd lost his mind, "HUH?!"

Izuku was surprised too. They were also going to be his teachers?

"He can't just know how to use Ope Ope no Mi," Law stated, "He needs to learn how to fight."

Franky inspected Izuku, "The kid does have skinny arms."

"Well he is a kid." Usopp deadpanned.

Izuku bowed politely to them again, "P-Please take good care of me!"

Zoro clicked his tongue, "Why do we have to teach some gaki?"

Luffy jumped down from his perch on the Thousand Sunny, "Come on, Zoro it'll be fun."

"Tch, fine," Zoro stared down at Izuku making the boy scared a little but kept his gaze, "I'll turn you into a beast! Be prepared, gaki!"

"H-Hai, Zoro-sensei!" Izuku said, giving him a determined look.

Zoro smirked at Sanji who gave him a certain look before turning to Izuku, "Listen kid, being a beast is good and all. However...being a gentleman with the ladies is far better!"

Izuku started mumbling much to Law's ire but otherwise said nothing, "I'll do my best, Sanji-sensei!"

"Don't brainwash the gaki, Ero-cook!" Zoro exclaimed.

"What was that, Marimo?!" Sanji shot back.

Izuku then started to laugh at their antics no longer feeling afraid, while Law meanwhile looked annoyed but that was nothing new.

That's just how the Straw Hats are.

"Keep going at it, gaki!" Zoro yelled.

Izuku grunted as he kept pushing himself to keep running the 30 minute lap Zoro made him do. For the first part of his training Izuku had to strengthen his body and who better to do that than Zoro himself. It took Izuku 2 minutes to realize that Zoro can be a real sadist. First, Zoro made him do 30 push-ups, 30 sit-ups, and now...30 laps. Izuku nearly passed out a few times but hung in there and refused to give up. He was told at school multiple times that he would forever be "Deku," meaning unable to do anything by Kaachan but that changes now. He'd train and work on his Devil Fruit powers and strengthening his body in order to protect those he cares about.

When he reached the last lap he fell to his knees, his breath heavy with sweat pouring down his face. His arms and legs felt heavy, but there was a sense of achievement he'd never felt before so he would ignore his sore arms and legs and keep pushing forward. A water bottle landed before him and he looked up to see it was Zoro-sensei who tossed it over to him with a grin.

"Not bad." He complimented.

Somehow, Izuku managed to give the man a grin and even speak, "Th-Thank you, Zoro-sensei..." He thanked, taking the water bottle and chugging it down hungrily.

Chopper then showed up, "Now make sure you eat something too after you work out, then take a bath."

Izuku finished guzzling down the water bottle and nodded, "Hai!"

"Oi, dinner's ready!" Sanji's voice rang out to everyone.

"DINNER!" Luffy's voice was loud and clear.

Izuku stood up slowly as he walked over towards the kitchen with Chopper following right behind him, just in case he fell over. Zoro meanwhile stood there impressed by the kid's mental discipline. Usually kids his age would be whining and complaining about every damn thing, but not this one. Heh, it actually made him was to keep training the kid some more.

The green-haired boy saw the good looking food in front of him and forced himself not to drool. He clasped his hands together, "Itadakimasu!" taking his first bite he made a humming sound before he kept eating with a smile on his face.

"Is it good?" Brook asked.

Izuku nodded happily not feeling scared of Brook anymore, instead finding the skeleton man funny. A little perverted, but funny.

Robin giggled, "He's such an honest boy."

"He'll grow up to be quite the heartbreaker when he get older," Nami said, "Hopefully he won't be a pervert."

Robin giggled.

Luffy was stuffing his face as usual along with Usopp, Chopper asked Izuku how he was feeling and the boy told him he was a little sore. Law and Bepo were eating with them too but had more manners than the rest of the Straw Hats when it came to eating.

"How's training with Marimo coming along, kid?" Sanji asked.

Izuku swallowed his food before answering, "Really good, Sanji-sensei."

"Yohoho, make sure you don't hurt yourself too much." Brook told him.

"Mm!"

Law finished his drink, "Take a shower after you finish eating. You'll be working with me next."

Izuku gave him a determined look, "Hai!"

Nami swooned and hugged the boy, "You're just so cute~!"

Sanji and Brook were taken back by the sudden hug attack by Nami and got jealous, wishing they were the ones being hugged.

"We're cute too, Nami-san!" Sanji and Brook wailed.

Izuku blinked as he was being hugged by Nami but didn't think about it much and hugged the woman back with a smile, "Nami-nee-san is pretty! Robin-nee-san, too!"

"Kyaa!" Nami squealed and hugged him some more, "You're just so adorable!"

"How sweet." Robin smiled.

Sanji and Brook had to give the kid some credit. When it comes to older women he played the charm on well.

Smart brat.

Law stared down at Izuku, "You ready, brat?"

Izuku nodded.

Law didn't waste any time getting started, "Rūmu (Room)." A blue circle surrounded them, "You already know about this. Like I explained before I can make this circle small or bigger if I choose," he made the circle disappear, "Your turn."

Izuku took a deep breath before copying Law, "R-Rūmu (Room)!" The same circle appeared and covered the two of them but Law spotted the difference.

"Slightly smaller than mine," Law observed, "We'll be working on that."

"Hai, Law-sensei!" Izuku said.

"Don't call me that." Law told him.

"Eh, um, Law-san?" The boy tilted his head.

Law made a face and decided to just let the kid call him whatever he liked. The rest of the Straw Hats were watching them.

"That's so cute," Nami smiled, "Law seems like the type that would be good with kids."

"Really? He seems like the last person that would get along with a kid." Usopp said, sounding doubtful.

"Then we can say the same thing about these two." Nami gestured over towards Zoro and Sanji.

Zoro gave her a face.

"Speaking of which, did you really have to make the kid do 30 push-ups, sit-ups, and laps?" Usopp questioned.

Zoro crossed his arms, "That was just a warm up. Tomorrow the kid will do 100."

"Are you trying to kill him?!" Usopp, Nami, and Chopper exclaimed.

Luffy simply laughed.

Izuku wasn't paying attention to them, instead focusing on what Law-san was telling him. He promised to get stronger and become a hero that protects people with a smile on his face, just like All Might.

No matter what he will become a hero!

A Child's Desire