A/N hey guys hope your having a wonderful day. Please like and share the story and comment like crazy. I enjoy any and all feedback.

JadeShade1392: Close very close. You see I wasn't trying to reuse other references so the Dissector isn't stein thought the more I think about it that could have worked. But the Dissector is from a story quite similar to Baki and yes his ring name is called the Dissector.

Ultima-owner: Oh trust me Overhaul will get overhauled.(Okay that was terrible pun I'll see myself out.)

Blazing heart frigid soul: thanks bu the fun is just getting started.

P.S. how are you guys liking the references. After the comments from last week I'm think of putting more in. Like a fun little guessing game. Who ever wins gets a cookie. NO RAISINS

On to the story

Chapter 7 Old Rival, New Friend

Taku Utenshu had been a cab driver for years and has seen several things in his years as a cab driver but nothing made him more nervous than his current passenger in the back of his cab. It was a girl in what he assumed was in middle school wearing a white bandana on her head covering her long dark hair, in hunting gear from the nineteenth century. In today's society that wouldn't be too weird maybe a reenactor or maybe a hero in training but what was really making him nervous was that she was cleaning a rifle right in the back of his cab.

'How in the world did this kid get a gun? What should I do? It looks like an old rifle used in hunting. I have heard of people who use old flintlock rifles for hunting so would this be grounds for me to call the cops or is it just an antique. Well here goes nothing.'

"So miss if you don't mind me asking where exactly you headed?"

"I'm heading to a mountain to do some hunting." she said without taking her eyes off of her rifle.

"Mountain? Uhh miss this address you gave me is nowhere near any mountain." said Taku. All he saw was nothing but fields along the highway they were currently driving on. A few trees here and there but no mountains.

"No, you are going the right way. I apologize if this is a little confusing. Usually I would run the whole way there as a form of training but i want to save my strength for the hunt." she said as she began examining her ammunition.

"Hunt? What exactly will you be hunting?"

"A dangerous prey. Maybe the most dangerous." she grinned as she looked out the window. "The turn is coming up by the way."
"Uhh right."

Soon the cab turned down a long dirt road that ended with a group of trees. "Thanks for the ride mister, here keep the change." Taku took the roll of cash which was easily double the amount the trip actually cost. He was about to protest the amount but she had already stepped away from the cab. He watched as she disappeared into the trees.

"Yeah I'm definitely gonna need to tell someone about this."

~o~

The girl continued to walk until she exited the group of trees where she saw the mountain ahead of her. She began to walk up the mountain as she tried to calm herself. 'Six months I've been waiting for this. I need to calm down. I've barely climbed the mountain, can't get to worked up before the hunt begins.'

She continued to walk up the mountain for awhile until she saw her destination in sight. 'Mister Yushiro's estate.'

She was about to enter when she heard something from behind her. On instinct she hid herself behind a tree as she peered around it. She saw a girl around her age with a blonde hair in a ponytail, in jogging attire. The blonde ran around the side path to the other side of the estate.

'Who's she, I don't remember a foreigner staying here?'

She followed her to the other side to see someone else she didn't know. "Come on Melissa you can do it. You're almost there." cheered a little girl in a pink hiyori. She had white hair and a small horn on her head.

Melissa breathing hard tried to make a strong finish as she made it back to the starting line. She pushed herself to stay running as she passed the lap robot at the end of the path.

"Bzzt Running track completed"

Melissa almost keeled over right then as she tried to catch her breath. "Thanks Eri." Taking the water bottle from her. A taking a long drink. "AHHH. How does Izuku do this? He makes this look so easy." she said clearly exhausted from her run. Even though she has progressed by leaps and bounds, it was still quite tough and through her out of her comfort zone, she was determined to keep going.

"He's been doing this for awhile but you were able to shatter your previous record."

"DAD!"

"Hey sweetie." said David Shield hugging his daughter. "How have you been?"

"Great dad but what are you doing here? Not that I'm not happy to see you."

"Can't a father check up on his daughter."

"Well of course but you were here not too long ago."

"Melissa" smirkered Yushiro "It's been almost two months since he dropped you off here."

"What really? It hasn't felt that long."

"Time flies when you're busy."

This reminded her when she first met them.

~o~

(Two Months ago)

David and Melissa arrived and were led into the living room by Tomo. Where she saw Yushiro at a small table reading some papers.

"Ah David good to see you again."

David gave a small bow. "Yes. It's good to see you too. I am happy to hear that you reconsidered what we discussed early." he said as he took a seat.

Melissa followed her father's lead and took a seat. Getting more and more confused why her father treated a kid who looked no older than her with such respect. Was he a genius or something?

"And who might this be?"

"Oh my apologies, sir. This is my daughter Melissa."

"Hello," she said a little nervous.

"Greetings Ms. Shield."

She had already said Hello and was confused on what to say next. THis day was getting weirder and weider for her. First her dad takes her to Japan, then to a mountain that she could have sworn wasn't there a moment ago and now she is sitting across the table from a strange kid.

"Is something wrong miss?"

"Huh, oh no just wondering when Mr. Yushiro is gonna get here?" This made her on the receiving end of two very confused stares. 'Did I say something weird? Maybe I should break the ice.' "Sooooo, what's it like to be Mr. Yushiro's assistant?"

Yushiro then gave David a deadpan stare. David scratched his cheek a little out of embarrassment. "I may have forgotten to mention a few things to my daughter."

Yushiro let out a sigh. "I guess I haven't introduced myself yet. I'm Yushiro."

"What but dad said Yushiro was a world renowned doctor and scientist. You're my age."

"Melissa, I know it maybe hard to believe but mister Yushiro here is immortal."

Melissa's eyes nearly popped out in surprise. "Your immortal!"

"No. Well somewhat. I can die but it will take a lot to kill me. As for my background, my quirk is regeneration, because of that I have nearly two hundred years of medical and scientific knowledge and before you ask I'm two hundred and twenty three years old."

"TWO HUNDRED AND TWENTY THREE!" she yelled in shock. Before calming herself down. "No way. I'm sorry but there's no way. I've spent years studying the first cases of quirks and all scientists related to the research and I've never heard of you or your quirk."

"Hhmm I guess a demonstration is needed. Tomo board please."

Tomo then came through the door with a board and plastic trash bag. She set the trash bag down in front of him and the board on top, then put a knife on the board. Melissa was confused but her father connected the dots first. "Wait… you're not gonna do what i think you're gonna do are you?"

Before Melissa could ask what her father meant, Yushiro lifted the knife in the air and in one fluid motion severed his free hand. Mellissa yelled in horror as she saw his severed hand on the board, though her horror soon turned into shock and then into intrigue as she saw Yushiro's hand grow back in a matter of seconds. "You're like a starfish."

"Starfish? That's a new one."

"So you have been alive for hundreds of years and you're a scientist to boot." said Melissa "Then why are you here, why haven't I heard of you? Your quirk alone is groundbreaking research."

"Melissa!" said David raising his voice. "I'm sorry Mr. Yushiro. The reason I didn't tell my daughter much was because I know how personal it is for you."

"It's fine." said Yushiro cleaning up his old hand giving it to Tomo to be properly disposed of. "Though maybe it's time I return to society. You see Melissa things were different back all those years ago. I went into hiding for the safety of myself and for others around me and in hopes of helping the world from the background, in doing so I have acquired knowledge that most people don't have and said knowledge can help fix your problems."

"Problems? What problems?"

"To heal All might of course."

"Huh"

David too was also a little surprised but didn't really show it. "So you knew then."

"It wasn't that hard to figure out. He has been slowing down a lot and he only works about three hours a day now. Honestly if you would have just told me who it was for we could have figured something out a week ago."

"Wait wait wait. Hold up what's wrong with uncle All Might."

There was silence as David tried to think of what to tell his daughter about All Mights condition. This is when Yushiro decided it was best to be honest. "All might currently as a hole in his side. After a fight with a powerful villain he lost half of his stomach a bit of his spleen and most other internal organs were shredded." He said as he handed her All MIghts medical papers that David Sent him.

She quickly glanced at them. "Daddy" she said in a quiet voice.

David gave his daughter a quick hug. "Don't worry. With mister Yushiro's help will have All Might back on his feet, better than ever." comforting his daughter.

"No"

David and Melissa turned to Yushiro. "What"

"I said no"

"What but you said you would help him." Yelled David borderline hysterical. "We need him do you have any idea what would happen if we lost him. We need him back at full strength. I already have support gear for him. Please just heal him and make him better."

"Sure."

David brain froze not understanding where this was going at all. Melissa wasn't faring any better but she was less frozen then her father. "I don't get it?"

"I'm fully willing to help All Might, fix up his body but that is not what I'm saying no to."

"Then what?"

Yushiro grabbed his tablet and put it on the table showing David's quirk enhancing device. "I won't help if you want to tamper with his quirk." said Yushiro. Melissa looked over the tablet studying the device while David was about to protest but Yushiro beat him to it. "Let me guess 'he's the symbol of peace, the number one hero in the world.' and your gonna go on how we need him at full strength then let me ask you this simple question. What happens after he's dead?"

This stopped David in his tracks. He was already coming up with his arguments in his head to Yushiro's response. Though nothing he had was good. "He's my best friend. He has helped so many people. I just can't imagine the world without my friend." he somberly said.

"It's a sad fact of life but one day he will be gone and when that happens the world needs to be ready. That's what I'm trying to prepare for. That's why we should be looking towards the next generation. I'm still willing to help him heal his body that alone should double the time he has for hero work."

"Really?"

"Yes I promise. I will help him if he accepts. Though I would like to talk to him first."

"Thankyou" he said with a bow that Melissa followed.

"Just promise me no more of this quirk enhancement business. I've seen it done before and it didn't end well." David reluctantly nodded. "Now who is your other patient. Did you bring them with you?"

This perked David up. He had waited for this. "Yes the other patient is my daughter Melissa."

"HHHHUUuuhh. Daddy I'm fine. I'm not sick or anything. The doctors back at I island gave me a clean bill of health." she said a little shocked.

"Yushiro you said over the phone that there weren't any quirkless people anymore but the doctors said my daughter is quirkless can you prove them wrong, please."

"Okay" he said but inwardly he was cursing himself for not thinking this was a possibility. The quirkless factor wasn't for All Might but for Melissa.

Melissa quirkly gathered all the information in her head on what this was about. "What are you saying I could have a quirk?"

"Of course you do." said Yushiro not missing a beat. 'I'm this far time to dive deeper into the rabbit hole.' he thought as he stood up. "Please stand up." She did so. "David, remind me what was your quirk again?"

David showed him his hands and his fingers bending in odd directions. "Bending fingers."

"Okay we'll start there. Melissa please show me your hands and arms." 'Good something I can work with.' he thought as he began to examine her hands. "Melissa what form of physical activity do you do."

"Umm not much the most I do is a bit of lifting when I carry junk or use one of my inventions." With that information Yushiro began moving her right arm while also measuring her pulse. "Um if this is a medical check up shouldn't we do this in a doctor's office or something?" getting a little embarrassed.

"We do have a medical office here but going there now would be pointless. I already got a good idea of your quirk."

"WHAT THAT QUICKLY." yelled both Shields in shock.

"We're home" yelled Izuku getting their attention. The three then hear a small padding noise in the hall. They then open the hall door to see Izuku and a very excited Eri talking to Tomo.

"It was so fun. We ran the mountain, then to the fields and then and then we ran back to the peak of the mountain and ran on some fluffy clouds." said the excited child. "Piggy back rides are so much fun."

Yushiro walked up to them. "Perfect timing. Izuku I would like you to meet-

"David Shield" said Izuku somehow materializing his notebook. "Your All mIghts first sidekick." he as he disappeared only for Yushiro to catch him by the collar of his Hiyori.

"You can fanboy over him later. Right now I need you to prepare the running course outside." he said letting the fanboy go. "Tomo, I need you to outfit Melissa here with some workout clothes and a heart beat monitor."

"Yes Master."

"Oh and if you wouldn't mind on your way drop these files off in my office. You can just put them on my desk next to the wisteria plant."

For a split second Tomo's face was stunned before she bows. "Yes sir." Before taking Melissa to get changed. As the others made their way outside to the training grounds. No noticed Tomo's reaction but Izuku, who made a mental note to ask his sensei later.

It didn't take long for Tomo and Melissa to come outside now sporting running top and shorts and her hair in a ponytail. "Okay so what do you want me to do now?" asked Melissa.

"I want you to play tag with Izuku."

All of them stood there as if they were stone. "Huh?"

"Tag thats a game right?" asked Eri "Can I play?"

"Not this time Eri." smirked Yushiro as he patted her head. "This game is for Izuku and Melissa, and Izuku I don't want you going easy at all, Melissa this will be the toughest workout yet. SO without further ado begin."

Melissa was shocked by the suddenness of the situation and didn't move until Izuku poked her in the head. "Hey." she complained as she tried to quickly grab him only for him to jump several meters away within a second. Without hesitation she chased after him. She tried several times to get close to him but could never reach him.

This went on for several minutes with Melissa doing nothing but tiring herself out. David was getting worried, Izuku began to see some change in Melissa, same with Tomo who expected it along with Yushiro who was ready to move to the stage and Eri who was wondering what's for dinner.

"Tomo, begin stage the next stage." said Yushiro

"Okay." she said as a small weight disk appears in one hand and small coin in the other hand. She raised the coin the air as it began to glow. As the coin glowed the ground beneath Melissa began to move. In the span of second a small mountain raised below Melissa. She had no chance to react as she fell down the new mountain. The most she could hear were her father's cries, but something inside her knew what to do. She used her legs and jumped off the side of the mountain and did a double backflip before making a ten point landing.

"How did I? Eeep" she said as Izuku crashed in front of her as he tried to catch her.

Yushiro took the weight from Tomo. "Melissa think fast." as he threw the weight right at her. Without even thinking she caught it with ease. That alone left her stunned but when she opened her hands she was left speechless. She had somehow bent the disk. For a moment she thought the disk was fake but she had been working with metals for too long and could tell it was very real.

Her father ran to her to make sure she was okay. "Melissa are you okay."

"Yeah dad I'm fine. Look what I did." showing the disk.

"How?" he said looking at the disk before turning to Yushiro yelling. "How did you know she was going to be okay, what if she fell."

"May I see the weight" he asked and Melissa silently gave him the weight before dropping right where Melissa would have fallen. Only for it to bounce like a bouncy ball. "Come now, she wasn't in any danger. Whenever we do something like this I have Tomo change the ground so if anyone falls they won't get hurt."

David was going to continue but was interrupted by Melissa. "How did you know I had a physical quirk or even a quirk in general?"

"One I've been studying quirks for hundreds of years and come to the conclusion that everyone below the age of fifty or at the least thirty must have a quirk. Two when i was examining your hands and arms, they felt more like the hands of a gymnast then one of an inventor also your ligaments didn't feel normal or i should say now the average that other people have. And before I get to the third I would like everyone here to check their heart."

A bit confused everyone slowly but there hands on their chest. Except for Melissa without thinking she put her hand on her wrist checking her pulse. "Huh what? You want us to check our heart beats right. The best way is to check our pulse right?"

Yushiro slowly took her hands. "Melissa. I hate to tell you this but you can't feel your heart."

"Huh what are you talking about." she said a little worried.

"I can feel your pulse right now through your hands. Can you feel the beating of your own heart in your chest right now." She couldn't, she stood there silent for a moment trying to feel it without using her hands but she couldn't. "You just ran more than you ever had before in your life. Even though you're catching your breath right now your heart should be beating hard enough for you to feel it, you can't."

She slowly shook her head. "No but why?"

Yushiro let go of her hands as he put his hands on Izuku's shoulders. "The third reason was when I met Izuku he was told he was quirkless, but I knew he wasn't because I had to operate on his lungs I knew that couldn't be true. That added with my calculations of quirk progression and the fact that quirk to to quirkless ratio has plateaued. It led me to a theory and discovery of what I believe to be a new gene in all of us that make us unable to feel the part of our body that our quirk effects. In Izuku's case it was his lungs in your case it was your heart."

"So the reason I didn't know I had a quirk was because I couldn't feel my heart. How come I didn't notice it before?"

"How can anyone notice it? When you get medical check ups doctors use a stethoscope to hear your heartbeat. When a teacher wants to show the class they show you your pulse because your heart beats too quietly when you're not doing any physical activity. Your quirk seems to activate depending on your heart rate and blood pressure which while hard is hard but not impossible to control but even then you can't feel it. So unless someone had a quirk that could tell them or was physically checking for it, no one would know, not even you."

"But my toe joint."

"Oh don't even get me started on that stupid joint exam." said Yushiro with annoyance. "Several people with quirks have several joints in their toes. Honestly it's the laziest way for a doctor to tell whether or not if someone has a quirk. It doesn't even work and we have two people right here as proof of that. If it was up to me every doctor who uses that test would have their medical license stripped from them."

While Yushiro was fuming about current medical practices. The shield's were celebrating. David was so happy Melissa could have sworn he broke her back, but at the moment she was too happy to care. "I got a quirk. I have a quirk." She kept crying into her father's chest.

"Yes. Yes you do. Now you can finally follow your dreams."

"Thanks dad. I promise I'll become a hero. One the greatest in the world."

"I'll help you every step of the way. I'll call the gym back at I island and we can get you started and maybe All Might can help you get into U.A."

"No." said Yushiro interrupting the touching scene. Getting everyone's attention.

"Oh for the love of." said David getting really sick and tired of him saying 'no'. "What is it this time?"

"Let me rephrase that. No that doesn't sit right with me. You see the reason I didn't let Izuku go back home right was one he was in no condition to go back, two I'm still considered a global government secret which doesn't really apply to you but , three we don't know the extent of her quirk that directly affects her heart. Like Izuku his abilities affect his lungs which in both cases can be a real medical issue. Not enough to stop them from becoming heroes if they train with them. So with your permission I would like her to stay here so I can keep an eye on her. To make sure nothing bad happens and I can guarantee with my training I can have her ready for the U.A. exam in five months. And if it bothers you so much you can stay here as well. We got plenty of room with state of the art equipment to keep up with your work if you want."

The Father and daughter looked at each other not really sure what to do. "We may have to think about it." Yushiro nodded in understanding.

"Well while you think about it how about we go inside for some dinner." said Tomo "Some of us haven't had anything to eat in awhile." as two mightly growls come from Izuku and Eri's stomachs.

They all laughed as they went back inside to eat. Over the course of the meal Melissa convinced her dad to let her stay so that she could train and become the hero she always wanted to be. While the other residents of the house had a conversation of their own.

"So you just messed with her heart." said Izuku wrapping his head around what had happened. Tomo simply nodded. "So when sensei asked you to put the files next to the wisteria plant that was code to somehow alter someone's heart."

"No we keep a spare phone next to the wisteria plant that I texted instructions to will you guys weren't looking." said Yushiro. "As for the whole mess with her heart bit, I'm sure you can guess that one."

"Tomo's quirk right." they both nodded. "Okay I get that part but what about the whole 'quirkless people don't exist' thing that you said."

"Some of that is true. Doctors do need to look deeper for peoples quirks and I already have a few ideas how to fix that in the meantime we need to start getting our lies straight cause all of this has shown me is that sooner or later we all are going to have to start walking in the light."

"So we're not going to tell them anything."

"Some half truths here and there but for the most part no. I was willing to tell you and Eri everything because my old friends brought you to me. To be honest I'm sure you already figured out I haven't exactly told you everything just yet."

"Yeah I kinda guessed."

"Knowledge is a powerful thing we need to be careful on how much we let others know about it. So I'm open to suggestions."

~o~

(Present)

"Incredible, Melissa." said David " In two months your stats have already exceeded those of candidates to U.A. who had years of training. Honestly I didn't think you could grow this much in such a short amount of time."

Melissa glowing with pride and blushing a little bit out of embarrassment. "Awe jezz dad thanks but the credit goes to sensei Yushiro. If it wasn't for him I don't think I could get this strong."

"Well I won't deny my hundred years of experience did help teaching you." said Yushiro drinking his tea as he, David , Melissa, Tomo and Eri were drinking tea on the porch. "But the years of teaching have taught me that students grow as fast as they are willing to learn. You're definitely determined to learn that for sure."

Unbeknownst to most of them a girl with a rifle was watching them. Waiting for her prey to show.

"Hey guys." yelled Izuku getting back from a delivery. "I'm home."

"Izuku onii-chan" yelled Eri

"Izuku we're over here." yelled Melissa . "We're having tea."

"OH hey Mr. Shield." said Izuku running to his friends. "How are you, here to vis-" As he was about to get the porch, he ran face first into an invisible wall.

"IZUKU" said both Melissa and Eri. As they and David stood up to check on him. Only to find the wall separating them from Izuku. As Izuku was getting up, before anyone could question what was going on, he heard something. A click.

"Boooom"

As an explosion hit the invisible wall covering the outside with smoke.

"Nice call on the invisible wall, Tomo" said Yushiro drinking his tea calmly.

"Thank you sir."

"What's going on?" the three screamed while wondering why they were so calm.

"Don't worry she won't hurt us."

"She?"

Outside the wall the smoke was clearing revealing Izuku coughing slowly getting up from the surprise attack. "Wait that attack. I know that attack."

"Well well well." said a voice. They turn to see a girl with a rifle over shoulder standing on a rock. "Long time no see Izuku Midoriya, or should I call you DEMON SLAYER."

"YAE RYOSHI"

Yae grinned "It's time for round two, IZUKU."

Next time: Round Two, or Three?

Wow okay this chapter was honestly not supposed to happen. I was planing like a two paragraph back story explaining how Melissa got there but it kind a kept growing as I was writing.

Any who. next chapter expect some serious fighting. Also please comment I'm really interested on the feedback for this chapter because of how sudden it kinda was.

P.S. only a few more chapters before we get to U.A.