Chapter Text
So this is my second one posted, but was my first crossover. The main character is Ace, the story from his point of view, but there are bnha characters in the spot light as well. It's a mix of both worlds, Ace in the bnha world. There's some violence, especially near the end, but not TOO bad (I think). Anyways, I hope you enjoy. It's a long one (all my crossovers seem to be over 145,000 words and one of them reached a new record of 200,000. But that one is taking forever to edit, so won't be posted anytime soon.) Enjoy~
"C'mon, Ace, this is stupid," Thatch said in irritation. For once, he didn't want to explore a creepy forest, and Haruta was busy with his responsibilities. They were on an island that Ace hadn't been to before and not many of the pirates had explored it. Ace was curious, so of course they'd explore it! He just didn't want to do it alone, that was all.
"No! We have to find out if she's here!" Ace protested. Thatch sighed dramatically and then huffed like a child. He pointed out that the legend probably wasn't even true. People don't have magic! There was some folktale on the previous island that a witch lived here. Ace wanted to prove or disprove that it was actually true.
They could take care of themselves anyways, even if the woman existed. Ace was too curious for his own good. They'd been searching the island for an hour, and Thatch was thoroughly bored, even though there were interesting animals all around to look at. Ace was pretty sure Thatch was tired of the roots he kept tripping over.
Ace just burnt them easily to get them out of his way. Thatch wasn't using his swords, which Ace thought was stupid, if he was going to complain and groan the whole way, he could at least cut the roots apart so he didn't trip on them.
When they entered a clearing, they came across not a hut or house, but a huge dome made out of dirt and rock, with a cave door in it that was covered in vines. Ace gasped and ran forward, Thatch following closely. But then they got really close to it, Thatch suggested that they leave.
"C'mon, bro, we don't even know what's inside. There might be a monster!" Thatch insisted. Ace pointed out that his haki wasn't picking up anything alive. That the dome/cave was empty and just fine to explore.
"You can wait outside, I'll be out in a couple minutes," Ace said excitedly, and then moved the hanging vines aside to enter the dark space until he was suddenly spinning, feeling absolutely ill before he hit the ground hard, landing on his back and groaning. He was on grass now, and he couldn't feel Thatch anywhere near.
He sat up quickly and looked around. "Thatch?" he called, trying to figure out where the hell he was. He was on a large field of green grass, and there were what looked like glass buildings all around, bigger than any building Ace had ever seen. He stood up, rubbing his sore back, and grew concerned.
Where was he? This place was huge! And surrounded by tall walls, he could see on two sides. The other sides were blocked by the many buildings, so he couldn't see, but assumed there were walls there as well.
He started walking towards one of the buildings, trying to find anybody to explain where he was and how to get back. He looked back at the space he'd landed and found there was a burn mark there. He still felt a little nauseous from the spinning. He hoped Thatch was okay, but he didn't appear there, so he hadn't done whatever Ace had done by accident.
Ace didn't see anyone anywhere, since the place was so fucking huge. He had a feeling he was not anywhere close to where he'd been with his family. They must be worried about him, and Thach was probably in hysterics. Well, he'd be back soon. As soon as he found someone and asked how to get back, he'd return and recount his small adventure.
As he walked closer to the nearest building, he found the doors were locked, and felt that there was no one close inside. So, he headed in the other direction and heard noises echoing from someplace. Loud noises, like explosions and shouting and the crumbling of buildings.
He started walking quicker before he broke into a run. He finally was no longer on the grass and instead found himself in a place that had buildings and streets completely wrecked. What the hell happened here? He cautiously entered the area, wondering why this was enclosed in walls. Tall walls he knew would be hard to jump over without using fire to propel himself.
Maybe there was a gate to get out of, but he hadn't seen it yet if there was one. Plus, he didn't know if leaving this place would get him back home. When he finally found the source of the noise, he saw a bunch of kids, maybe teenagers, all standing around in strange outfits, and one adult.
Hopefully the big guy could help him out. "Hey! Hey, you!" Ace called, running towards them. He felt he didn't look too weird compared to the costumes all of these people were wearing. Everyone froze, and the adult looked at him in worry and suspicion, standing in front of the kids. Ace wasn't going to hurt them, but he was a complete stranger in a strange place.
He knew nothing about this place, so perhaps strangers were looked down upon? There were obviously walls for a reason. He decided to get straight to the point. He stopped maybe ten feet away from the adult and kids.
"Can you tell me where the hell this is and how I can get out?" Ace asked simply. The adult blinked twice, looking at him in disbelief. Ace finally got a good look at his face, and wondered if he had eyes or they were completely gone. He was quite muscular, but nothing compared to how huge Pops was. He hoped they were okay and he'd get back soon.
"Who are you?"
"I'm Ace. Who are you?" Ace asked in return. Everyone looked shocked at that for some reason. The man introduced himself as "All Might". He didn't ask for his real name, it wasn't his business. "So, where is this?"
All Might seemed to think that Ace wasn't going to attack them, as he was leaving himself completely open, hands in his pockets and looking relaxed. He could fight if he was attacked, but he didn't want to look aggressive when they were already looking at him in a bit of fear. "You are at U.A. highschool. How did you get in, there is security at the gate?"
"Oh, there is a gate. I sorta just appeared. I was with my brother and then I walked into some cave and now I'm here," Ace explained honestly. "It sounds kinda crazy, but it's the truth. Do you know how I can get back?" He sounded awkward, but friendly. He felt he was doing a good job coming off non threateningly.
All Might looked confused and curious, losing his bright grin that must hurt. The kids were no longer hiding behind him, but watching with curiosity and disbelief. "I'm not sure how you can get back if you're telling the truth. Do you have a time traveling quirk or perhaps a teleportation one?" Ace cocked his head and asked what a quirk was. "It's a super power that most people develop."
"Like devil fruits?" Ace wondered. All Might looked strangely at him, before he said class was over. All Might asked him to walk with him back to the main building. Ace was skeptical, but needed any information he could get. He would fight if he needed to, even though that wasn't desirable. "I do have a power, but it's from eating a devil fruit."
All Might asked what power, and Ace told him he was made of fire, and turned his body into fire to show him. For some reason, this made the man looked shocked and now taking him seriously. "Where did you come from?"
"An island in the New World. Our ship docked there and I went exploring in the woods and then found myself here. I appreciate the hel-" and then Ace was gone in a bright flash. His back hit the ground again and he found himself no longer in the crumbled part of whatever a high school was. "Ugh," he groaned, sitting up and finding himself back home.
"ACE!" Thatch screamed and tackled him. "You're okay! Where the hell did you go?!" he demanded. Ace chuckled, and told the story.
-x-
"It was soooo weird, guys. All these kids were wearing these silly costumes and the place was huge! The buildings were so tall and seemed to be made of glass. I have no idea what a high school is, but I wish I could have explored it more," Ace explained at dinner. He was so interested in that place. He wished he could visit it, but was also fine with never going again. He wouldn't be returning to the portal anytime soon.
Well, never, as they'd set sail already, away from the mystery island. "Man, I wish I had gone, too!" Thatch lamented. He had not gone into the cave once Ace disappeared, and instead went to get help. He couldn't feel Ace there anymore with his haki, so he knew going in the cave was useless.
"I don't know, the guy was taking me to the main building. He might have had bad plans for me, who knows? He seemed alright, but was very suspicious, obviously. I think there was something at the school that they had to protect, that's why there was a wall."
Marco said, "And you got in easily. So of course they'd be suspicious of you. It's just lucky your powers still worked in some other world." Ace nodded in agreement, taking a chug of his booze. He said that, while the other place was interesting, he'd much rather be home with his brothers.
"I mean, it was a new experience, but I wouldn't want to stay for an extended period of time. I don't know what would have happened… though learning more about how they had powers would have been interesting, since they weren't devil fruits. The guy, All Might, said that they developed them, meaning they did it on their own, not consuming something that gave them powers," Ace explained. He was interested in it all, wishing to learn more, but would definitely want his brothers with him there.
At dinner, the topic had faded, and they were discussing the next island, since they had been unable to get any resources or supplies on the previous. No food, nothing. And there was no witch, just a portal. They all wondered if anyone else had gone through it. If anyone else was in that world from their own.
Ace went to bed in his room after taking a shower in his personal bathroom. He always loved the perks of being a commander. After the whole Teach incident, Ace had had a bit of trouble trusting his division, but that had been over a year ago, and they'd since gained his full trust once again.
It was lucky Marco was there, looking for Thatch since one of his sous chefs had lit the stove on fire. He found Teach with a knife aimed right at Thatch, and tackled the traitor to the ground, snapping both arms and dragging him to the brig screaming. It was terrifying, how close they had been to losing Thatch and Teach gaining that damn fruit.
If things hadn't gone that way, Thatch would be dead and they would have a massive threat. But things didn't end up that way. It was lucky beyond belief, and had scarred almost everyone on the ship, knowing they almost lost Thatch.
Poor guy hadn't been left alone for three weeks, always surrounded by his brothers. People even waited outside his door at night, guarding him. The chef had been a good sport about it, even if it annoyed him a bit. Things were back to normal now. Back to adventuring, fighting marines and enemy pirates, gaining some new family members, though Ace was still the youngest. He was the "baby" of the family.
He went to bed and slept just fine. It was the next morning that problems arose. He woke up with a splitting headache, and barely was able to dress himself. He couldn't leave the dark room, and Izo had knocked on his door, asking if he was alright.
"I just have a headache," Ace explained through the door. "I'll be out in a bit," he promised, and went back to his bed, putting his hat over his eyes to try and block out any light coming from under the door or porthole.
He fell asleep, but when he woke up, it was to landing hard on his back again. He wasn't on his bed anymore. It was cold and windy, and he was on grass. He scrunched his eyes closed, afraid to take his hat off of his face. He was in his room, he was in his room. But when he took a deep breath and removed the hat from his face, he found he was where he was the day before.
Ace sat up, and the headache was gone. Well, he'd be back at the Moby soon enough. He closed his eyes, and fell back asleep, even though the grass was a bit itchy on his bare back, and expected to wake up in his bed.
But when he opened his eyes, it was to someone shouting, "That guy is back!" He lifted his hat from his face and sighed, sitting up. His stomach roared as he hadn't had breakfast, and he stood up, putting his hat back on. What was he supposed to do? Just wait? So he waited for at least a couple hours in that spot, waiting for anything to happen. Last time, he'd only been there for maybe an hour or a bit less.
He decided he'd try to reason with the adults, and was glad he'd put his shoes on and was dressed like he usually was, and wasn't in his pajamas. He saw the same group of kids from the day before, though they weren't in their costumes. Looked like exercise clothes. They had to be fifteen at most, almost seven years younger than Ace.
Ace walked slowly to the adult, a guy who looked like he hadn't slept in weeks. He had a bunch of wrappings around his neck. Was he the teacher like the other dude, All Might? Well, he only had one way to know, he had to ask. And ask for food and water.
"Hi, again," Ace said, the picture of tired. "So, I'm back again," he said in a dry voice. "Um, can I ask your name?" he asked the adult -teacher. He wondered what this guy's devil fr -quirk - was.
"I'm Eraser Head. Your name was Ace, was it not?" he asked, and he sounded just as tired as he looked. Ace nodded, and introduced his full name. Portgas D. Ace, and said it was nice to meet him with a polite bow. "What are you doing here? All Might told us your story. We thought you only came from one entry."
Ace shrugged. "I don't know. I was asleep back home and then was back here. I thought I would leave again, but it's been hours since I arrived," he answered honestly. "I have no idea how or why I'm back. I'm sorry to disturb your class once again." His stomach roared. "Do you have any food?" he asked slowly, feeling like a kid, asking a stranger for food.
Eraser Head looked at him warily, but Ace showed no move that he would be a threat. Because he wouldn't as long as nobody attacked him. And he didn't sense this guy would hurt him unless he made a move first. And he wouldn't, he wasn't stupid. He wasn't back home, he didn't know how this world worked.
The kids were watching with interest, some of them looking grumpy. "All Might said to bring you to him if you showed up again. Didn't really expect you to, to be honest." Ace laughed awkwardly. "So, I have one question. You don't have a quirk, correct?" Ace nodded. "Will you use your power in a non-threatening way? I'd like to see something."
Ace frowned, and Eraser Head said he wouldn't try to hurt him. "Alright…" Ace said and lit his shoulders on fire. The guy's hair lifted as he glared at Ace. Ace fidgeted, confused as to what was happening. For some reason, the kids in the class gasped.
"I'll call All Might. You were telling the truth, thanks for being honest," he said dryly. Ace wondered what that was about, and doused his flames. One kid was staring at him hard, one with white and red hair and a scar over one eye. Ace was not really with good with kids he thought, so he wasn't sure what to do.
"Go wait over there," Eraser Head commanded. Ace scowled at the demand, but sighed and walked to a section of the grass, sitting down and yawning. The kids all stared at him, one of them especially looked enthralled and amazed by him. He had dark green hair and freckles, like Ace's only there were less of them.
All Might came over, and called Ace's name. Ace looked behind him and stood, dusting off his shorts and walking to the man. Really, his mouth looked like it would cramp all the time. "Surprised to see you back so soon," All Might said. "Follow me."
Ace asked how long it had been for him since he arrived. "You were here three days ago." Ace looked confused. It had been less than one day for him. Did time work differently here? He hoped everyone wasn't too worried about him. He would get back sooner or later. For now, he was hungry.
"Can I get some food?" he asked after his stomach grumbled again.
"Sure, on our way to the principal," All Might said easily, clearly not afraid of Ace, which he was glad of. He was doing his best to be friendly, since he didn't know the powers or personalities of any of these people. Ace asked what a principal is. All Might looked at him in surprise.
"My place doesn't have school. Whatever that is," Ace explained.
All Might asked, "Then how do you learn?" in curiosity.
Ace replied, "Your parents teach you, if you're lucky. My brother taught me to read and write and one of my other brothers taught me math. Do kids learn that stuff here?" All Might nodded. "Well that's convenient."
All Might nodded, but said nothing else as they approached the main building. It was so reflective, like glass. This world really was different than his own. The only thing that seemed similar were that these were humans and there was grass and trees. He was led to a galley of some sort, which All Might called the cafeteria. "Get everything you want."
Ace grinned and ran to the buffet, serving himself a massive amount of food before quickly consuming all of it at record pace. His fire burned calories faster than normal humans or others not made of fire.
"Thanks for the food," Ace said with a smile. All Might looked at him strangely, but also in amusement. Ace was glad it wasn't anger or disgust. "My fire burns calories quicker than normal people," he explained simply.
"Interesting. Is it alright if myself and my superiors ask you some questions?" All Might asked, leading Ace up some stairs to the next floor.
Ace nodded, saying it was to be expected. "I might not answer some things personally, but I'll cooperate as best as I can. I have no idea how this world works, so I won't blow it or disrespect someone who's helping me out. I do apologize for interrupting your classes, twice," he said politely.
He knew he would not say he was a criminal. That would stay hidden. He'd say he was a sailor, because that was true. Not the whole truth, but he had no doubt he'd be unwelcomed if he said he was a pirate, if pirates did exist here. He had no idea and wasn't going to bring it up.
They arrived at a door and All Might opened it, letting Ace inside before him. There were a handful of people, all wearing the costumes. They were so strange, but he didn't stare or comment on them. He was pointed to a chair and sat down in it.
There was a woman with a very revealing outfit, a guy with an uneasy mask on that covered his whole face, another guy with blonde hair sticking up and with some sort of contraption around his neck. He was the only one smiling (besides behind him) and a mouse person? Oh well it wasn't that weird. Chopper was a talking and transforming reindeer.
"This is Ace?"
"Yes. Ace, introduce yourself if you will. And please speak of your powers. We must be clear with one another on such things," All Might said from behind him.
Ace nodded, and introduced his full name. "I ate a fire logia devil fruit. It made my body fire and can control and create it as well. A logia is a devil fruit that turns your body into a substance. Such as sand, magma, ice, etc. Oh, and haki, but I don't use that regularly."
The woman and man with yellow hair had their eyebrows raised, while the masked guy asked what haki was. Ace was surprised that they didn't have haki here. He just assumed they did since people had powers. Well, their powers weren't from devil fruits.
"Will you explain haki, Portgas?"
Ace said, "Just call me Ace. Haki… how to explain it. Hmmm. Well, there are three types. Armament, observation and conqueror's haki. Armament is able to harden your body to weaken any physical attack," he said, and coated his arm in haki. "Observation is basically super senses. You can tell when people are around or how powerful they are if you're trained or not. And conqueror's haki is very rare. You can cause people to fall unconscious or tame wild animals."
The others looked surprised, and the woman asked if haki was common. "Yes, almost everyone in the New World uses it. You won't last there if you don't have haki." Suddenly, they all looked curious and sat down.
Midnight introduced herself, said she can make sleeping gas come from her body. Present Mic was the blonde guy with the crazy hair, and he could raise his voice high enough to make peoples' ears bleed. The last one besides the mouse-guy was Ectoplasm, who could make clones of himself.
"Yo, tell us more about your world," Present Mic said excitedly. They were all teachers. Ace asked if they would tell him about their world in return, and they agreed. The principal still hadn't spoken, the leader of the school as All Might had said.
Knowing these people didn't have haki made him feel better, but two of their powers might be able to harm Ace. Put him to sleep or make him be unable to move due to sound. Well, there were weirder devil fruits out there. Like the jacket jacket one. What a let down if you ate that one. He was glad he ate his fruit. It was so useful.
"What do you want to know?" Ace asked, knowing this would be a long conversation, but he would build trust like this, being honest. Until he went back home, he had to play nice with these people, since he had nowhere to go and no idea how this world works.
"What is the New World?" Midnight asked.
Ace said, "Well, it's the most dangerous part of the Grand Line. That's one of the seas of my world. Most of it is ocean, so ships travel from island to island. Only brave idiots go to the New World, I just happen to be one of them. That has the most devil fruit users in it. It has erratic and abnormal weather patterns and more sea kings than any other place besides the Calm Belt. Sea kings are sea monsters, basically.
"The New World is considered a graveyard since so many people end up dead there," Ace finished.
Ectoplasm asked if their government did anything to stop that. Ace couldn't help but scoff. "Our government doesn't care about the people. The marines kill civilians and support the Celestial Dragons. Tyrants who are allowed to murder and keep slaves without any sort of consequences. The government and marines do whatever they want. There's a prison by the government that used various types of torture methods on criminals. It's a mess," Ace explained, voice spiteful.
Apparently, this was not how this world's government works, as they all seemed horrified and shocked. Well, good for this world. "Will you tell me about your world?"
So, they explained their world, and Ace didn't understand most of what they were saying. It was enough to know people with quirks (natural devil fruits) could become licensed heroes. Sounded boring. To bow to the government to use your powers. Sure, it would be better for some devil fruit users to be regulated, but he couldn't exactly talk when his father could destroy the world if he so wished.
The principal finally introduced himself. "I'm Nezu, the principal and leader of this school. My quirk is being smarter than most humans." Ace nodded, and the others asked if he found it weird that animals could talk.
"Nah. Animals can eat devil fruits as well. My little brother travels with a talking reindeer, so it's not too unusual." His eyes fell, afraid he'd never see Luffy again. He wanted to go home. All Might noticed the change in his demeanor, and asked what was wrong.
"I worry about if and when I'll get back home. I was only there for a day before I came back here. They're probably worried about me. I don't want them to do something reckless," Ace said honestly.
"Don't worry too much, young Ace. What will happen, happens. If you can somehow get back on your own, then I'm sure you will!" All Might said with conviction. He was entertaining and seemed pretty charismatic. "How old are you?"
Ace replied that he was 22. "Is there any place I can stay until I go home or find out how to go home? I don't exactly have anywhere to stay or get food," he said awkwardly, worried that they'd turn him down, even if they seemed perfectly fine with him. But, he was still a stranger, one with powers, and they'd only been talking for about two hours, as both sides had gone into detail about their worlds.
Nezu spoke, who had been quiet the most of the time, watching Ace closely. He wondered what he was thinking the whole time, if he was so smart, what was he seeing? Hopefully he didn't know Ace was a wanted pirate. He would keep that information to himself. "I'll help out if I can. Clean, do errands, and if I can, I'll use my power to help out."
The teachers turned to Nezu, who finally spoke. "You may stay here for now. I don't see any issue with keeping you here. You have given no sign that you will hurt any of us, and I can tell that easily with anybody. Cleaning would help us out until we find something else for you to do."
Ace sighed and thanked him. "But, I would like you to stay away from our students, as we still know little about your character." Ace nodded, understanding that. He bowed in his seat, sincerely thanking them for showing kindness.
"You can stay in the back unused room of the infirmary for now. You can eat after the students do," Nezu said. Ace was so relieved he had food and shelter for now. Now all he had to worry about was when the hell he was getting back home. He bit his lip, and All Might clapped him on the back. It would have been hard and painful, but his hand went right through Ace.
They were all shocked. "I'm made of fire, blunt attacks can't harm me. Guns, swords, punches. My fire absorbs all of them," he explained.
Present Mic asked if he had any weaknesses. Ace would not share seastone or water. "Haki bypasses all devil fruit powers. Even the useless ones," he said. Then, the excited blonde asked to know more about devil fruits. Ace sighed, knowing it would be a long conversation. "You wanna hear about he stupid ones or better ones first?"
Midnight asked for the stupid ones. While he spoke, more people came in. "Let's start with the jacket jacket…"
After that, he was led to the infirmary and back room, where he'd be staying. It was boring and not very cozy, but it was a hospital bed, so he was just grateful they were using one to give him a place to sleep. They were being quite considerate.
PS: If anyone notices anything strange about this chapter, as if it's missing parts, please tell me. The word count is different here than on ff.net. But I can't figure out what is different.