So this is my first story on this site, however it is not my first fanfiction I have written, so I'm not a complete novice. Though the fanfiction I wrote wasn't in this type of format and I'm not used to writing stories, so you'll have to bear with me while I get to grips with things. But never mind that, I am here with an idea I have been thinking of for quite a while, so the story will be fine for the most part. So I hope you enjoy reading it as much as I will enjoy writing it. And just a quick note, this will mainly be from a 3rd person perspective, if it changes at some point, I will try to point it out, but if I don't then I'm sorry in advance if it confuses you. But enough of me going on, let's get into the first chapter.

"..." - Talking

'...' - Thinking

"..."/'...' - All Might Buff Form

'...' - Me

I do not own My Hero Academia or it's characters, the franchise belongs to its respective owners!

Gravitational Sorrow

By Kokoyori

In a society where powers called quirks were present in people's everyday lives, nothing was out of the ordinary. Which is probably why being a Hero was actually a profession. Our main character Izuku Midoriya has always wanted to be a hero, someone who could save others with a smile on their face, just like his idol: All Might.

But that isn't all, Izuku KNEW he was getting a quirk, and possibly a powerful one at that. This is due to how since birth, his body has always been far more durable than the average human body. Even without a quirk, he had a body that would make people think he had a durability quirk or something like that.

But that wasn't the case, his strong and durable body was like a side-effect of the quirk he would eventually develop, according to the doctor Izuku and his mother had visited after Inko noticed that Izuku's body was strangely able to take falls that would usually leave a 4 year old with a bruise.

Inko eventually decided to see a doctor about what was going on, I mean, it wasn't completely unusual for kids to develop their quirk below the age of 4, especially if they had a mutant type quirk.

Flashback -

The Doctor walked back into the room after looking over the tests he had just run on Izuku "Well this certainly is a special case Mrs. Midoriya..." he said as he closed the door.

Inko looked at him, confused "How so?" she replied. Izuku just looked ahead in excitement. However, 'I hope I'm gonna get a quirk!' was all he could think at the time.

The Doctor carried on: "Well, when we looked at your son's body, we noticed that it is far more durable than the average body. His bones are stronger and thicker, his muscles are developing much faster than any kid his age, I could go on but I think you get the point". He decided against listing off everything, as he would be there all day if he did.

Inko looked on, shocked, but also intrigued by what the Doctor had said "So Izuku has a quirk?" Inko asked.

As soon as Izuku heard this, he jumped out of his chair in excitement, shouting "I HAVE A QUIRK!?"

All the Doctor could do was chuckle at the young boys reaction. But he wasn't done explaining yet, he carried on "Now now, I'm not done explaining yet" he said. Izuku nodded in response and walked back to his chair.

"Now before I say anything else, this is not Izuku's quirk" he said immediately, which caught the attention of Inko. But before she could say anything, the doctor started talking "This is however, a feature of the quirk he will eventually get, a side-effect if you want to call it that. So yes, Izuku here will develop a quirk"

The reaction that Izuku gave was priceless. "YAY! I'M GONNA BE A HERO!" he shouted as loud as he could, making his words echo through the halls of the hospital.

Inko could only smile at his reaction 'I'm so glad that he is this happy, he was so sad when his Dad passed away…' she thought. She decided to speak up "I'm so happy for you Izuku!" she said while pulling him in for a hug.

"I'm happy for you as well, now before you go, I need to speak to your mother for a bit. So could you please step outside while we talk?" the Doctor asked him kindly.

Izuku was confused at first, but that confusion quickly disappeared after he reminded himself that he would get a quirk. "Ok!" he replied and walked out of the room.

With Inko -

"So what did you want to talk about?" she asked with curiosity.

"Now although we can't be 100% sure until we actually see his quirk, from what I have seen, I believe the quirk that your son will develop will be quite powerful. I also can say for sure that after looking through your family quirk history, the quirk your son will develop will be nothing like any quirk in your family history, a strange mutation is what I assume happened" the Doctor explained, while Inko was still confused.

The Doctor carried on "Now I can see your confusion, the main reason I called you here is to warn you. We know basically nothing about your sons quirk apart from that it will be powerful and that it is nothing like anything in your family. What we don't know is HOW powerful his quirk will be and when it will activate, we don't even know what it will do to him. So for the time being, I would be careful, especially in crowded areas, you never know what will happen" the Doctor finally finished explaining

Inko was going through a mixture of emotions currently, she was happy Izuku would get a powerful quirk, but sad that it could hurt him, but also scared that he could hurt others with it. But she managed to keep her composure and say "I will keep it in mind Doctor". She then stood up to leave

"Okay, good" the Doctor said while also standing up and saying "Just make sure you keep an eye on him" after saying this he opened the door for her, which revealed broccoli coloured hair. Izuku was sitting there, waiting patiently.

Inko looked at her son and said "C'mon Izuku, it's time to go". Izuku nodded and ran down the hall, Inko then turned to the Doctor "Thank you for your time" she said, then she proceeded to try and catch up to Izuku.

End Flashback -

Inko was in the kitchen, waiting for Izuku to wake up so they could go to the mall, it was his 4th birthday 2 weeks ago, however the limited edition All Might figurine she had ordered him ended up getting stuck in the post, so they had to go and pick it up instead.

Inko then thought to herself 'Nothing has happened with Izuku's quirk yet, but he is at the age to develop one now, let's just hope that we aren't out of the house for too long, you never know when it may appear'.

Little did she know, today would be a day that would go down in Japan's history books, but not for any good reasons.

A Few Hours Later -

"Thank you so much Mom!" Izuku shouted while holding the limited edition All Might figurine he had been dreaming of getting.

"No problem Izuku" she said while smiling at the antics of the young child.

"C'mon Mom! I want to go home as soon as possible so I can play with this action figure!" he said while basically dragging the poor woman across the mall.

The surrounding people watched the boy and all thought 'Cute…' simultaneously.

"Okay okay just let me walk, then we can go home" she said while escaping Izuku's hold.

"Okay!" Izuku said and ran off ahead of his Mother.

Little did the two know, they had also gained a mysterious looking man as an audience member, but he did not have good intentions like the rest.

Before Inko could say anything, the man grabbed her and held mouth shut, while a large knife was situated directly next to her neck, ready to cut straight through.

While Izuku was running, he heard a scream from behind. He turned around with curiosity, but what he saw would haunt him for the rest of his life. He saw a man holding his Mother, a knife by her neck.

The man started shouting "NOBODY MOVE! MOVE ONE STEP AND THIS WOMAN WON'T SEE TOMORROW!"

Izuku could only look on at the man with pure fear, he couldn't move at all. 'No no no no no no no no no, move body! Save Mom!'

But he couldn't do anything, he just stood there, seemingly frozen in place. Until he was overcome with an emotional rage. "GET OFF MY MOM!" he screamed, the noise echoed throughout the entire shipping centre.

Before the man, or anybody within the area could react, they all hit the floor, unable to move, with their bodies seemingly being crushed by the pressure on them. Some looked up, only to see the only one not affected by the pressure was Izuku, he was just standing there, completely shocked by what was happening.

Some tried to use their quirks to escape, but to no avail, their quirks wouldn't work. Some screamed at Izuku, telling him to stop. But Izuku couldn't stop it, he didn't know how to.

Izuku then walked to the person in front of him "P-p-p-please, make it s-stop" he said. But the man he asked couldn't hear him, all he could do was see Izuku, who at this point, had crimson red eyes that shook the man to his core, then the man started to lose consciousness. Before he lost consciousness, he managed to say one thing: "G-get away! Y-you monster!".

Izuku could only look on, crying at the mans words. 'Monster!', the mans words repeated in Izuku's head, over and over again, like a record player. Izuku fell to the floor, crying. He started looking around, most people had passed out, or so he thought they had. Some were still conscious, but they all looked on at the boy in fear, all of them, apart from one.

"I-izuku" said a weak voice in the crowd. Izuku looked on, only to see his mother, who was fighting with everything she had to stay awake.

Izuku ran to his mother and hugged her "M-mom please! Make it stop! I don't want to hurt people! I don't want to hurt you!" He was crying in her arms.

"I know you don't Izuku" she said while she was slipping out of consciousness. She spoke up before passing out "L-listen Izuku" he looked at her, still crying. She reached for him and hugged him as tight as she could "Remember that I have always loved you, and I always will, nothing in the world will change that truth" At this point, it was a miracle that she was still alive, let alone awake and speaking, "P-please, live a good life and don't regret any-" but before she could finish, she finally collapsed onto the floor and out of Izuku's hands.

Izuku just looked on in horror. He had tried to save her life, but in the end, he was the one that ended her life. 'What type of monster am I?' was all he could ask at this point. He was still, completely emotionless. He felt broken and lost, like he had nowhere to go, he was stood in front of a wall, and nobody was there to help pull him up this time. But before he could think anymore, he passed out.

With a Certain Number 1 Hero -

All Might, or as some people know him: Toshinori Yagi was sitting in his office and minding his own business, still in a slight bit of pain from his recent battle with his arch nemesis, All For One. Toshinori still hadn't fully gotten used to his new scar he had received from his fight and had only recently left the hospital, but it was worth it in the end. Although they didn't find All For One, Toshinori knew that he would be out of commission for a while, if not forever. But before he could continue in his head, he got a call from a familiar number.

'Caller ID: Naomasa'

Toshinori wondered to himself: 'I wonder what he wants at this time?' and with that thought, he answered the phone swiftly.

"Hello Naomasa, it's good t-" He was quickly cut off from his friend shouting at him.

"Toshinori! There is no time for that now! I need you to meet me and the rest of my tean at the mall right now!" Naomasa shouted into his phone.

"U-um okay? I've used up all my time today so I can't come as All Might, is there a threat?" Toshinori asked him.

"That's fine! I will explain when you get there, don't worry, there is no threat, they took themselves out. It may not make much sense, but you need to be there" Naomasa reasoned with him.

"Okay, I'm going there right now, I will be there in 10 mintues" and with that, he hung up and ran towards his car.

At The Mall With Toshinori -

When he arrived at the mall, he didn't quite understand what was going on, all he could see were many ambulances and a lot of people outside, 'They seem to have been evacuated, but what the hell happened? They all look really shaken up about something' he thought. However, his thoughts were interrupted when he heard a familiar voice call to him.

He turned around to see a familiar face running to him. "What's going on Naomasa? What happened here?" he asked with concern.

"I think it's best if you investigate yourself" and with that comment by Naomasa, the two walked inside.

What Toshinori saw shook him to his core, he saw many bodies being rushed outside by paramedics, while some still laid there on the floor, motionless. He quickly turned to his companion and said, "Are they alive?! What the hell happened here?!"

Naomasa put his head down, "I don't know, but from what I've heard about the bodies that have been rushed out so far, I don't think anyone here will survive…" He truly hated having to say this, especially to someone like Toshinori, who at this point was probably blaming himself already.

But Naomasa finally decided to speak up again, saying: "But, there will be one survivor" he said and pointed to a young child lying on top of a woman, they both had green hair.

"What do you mean he will survive? That can't be possible, if all these adults couldn't survive whatever happened, then how the hell can a kid survive?" questioned Toshinori. He looked at Naomasa who was still looking down, then it dawned on.

'No way...' he turned to Naomasa "Don't tell me… Did that kid do all of this?". He was waiting for an answer, but all he got was a slight nod from his friend. To say Toshinori was shocked would be one hell of an understatement, 'How the hell did a kid do all this? Surely he wouldn't be in a public space if his quirk was this dangerous, unless…' but before he could ask questions, Naomasa spoke up and lifted his head.

"The kid awakened his quirk after a man threatened his mother with a knife to her neck. From what we heard off people who luckily weren't caught in the kids quirk was that one second everyone was still, and then the next they were all on the floor, being crushed by some sort of force" Naomasa explained.

Toshinori couldn't believe what he was hearing. He wondered how a newly awakened quirk was this powerful, it was basically unheard of. But before he could carry on his thoughts, Naomasa spoke up.

"To be honest, I feel bad for the kid, he had no control over what happened and from what I watched from security footage, he couldn't stop his quirk, whether it was due to it being too strong or him being too emotional, I can't really blame him for it. And that's not the main reason either"

Toshinori looked at him with confusion "I agree with you, he clearly had no control over what happened. But, what do you mean that's not the main reason?" he asked.

"Well, from security footage and audio I heard from it, I heard the kid ask someone for help, saying to make it stop, but the man he asked just looked at him and called him a monster, but that's not even the worst of it either" Toshinori was shocked at what he said 'poor kid' was all he could think, he was about to question the last part, but let his friend carry on instead. But little did he know, he was nowhere near ready to hear the words he was about to hear.

"The kid… He killed his own Mother"

They both stood there in silence, letting the words set in. Toshinori had felt like someone impaled him with a thousand blades, he couldn't move, he was frozen in shock. He couldn't help but wonder how the kid would handle the rest of his life with that knowledge. But he finally spoke up.

"D-do you know if the kid has any other family?" He asked with a shaky voice.

"Unfortunately, he doesn't. His father died 2 years ago and his mother was the only family he had left. But we can't just put him up for adoption, he will be emotionally broken without someone he feels comfortable around him, but there is nobody like that, we just don-" Naomasa was cut off by his friend.

"I will take him in"

"W-what?" Naomasa said, shocked by what the Number 1 Hero just announced.

"I know I've never had kids before, but I can't help but feel the need to help this kid, as a hero and a normal person" Toshinori said with confidence.

"Why am I even surprised?" Naomasa said while chuckling at his friends antics

"What?" Toshinori asked, confused.

"It's just shows that you will help literally anybody that is in need, you really do deserve your spot as the Number 1 Hero" Naomasa said while smiling.

"Thank you, it means a lot" Toshinori responded.

"Well, I'm glad you offered, I forgot to mention but before this entire mess happened, the kid, whose name is Izuku Midoriya by the way, had just come out of a shop with his mother while holding one of your limited edition action figures. He looked so happy, I wouldn't be surprised if he was your biggest fan" Naomasa explained.

Toshinori could only smile at the statement.

Some Time Later -

After a while of talking about what would happen from here and finally clearing out all of the bodies into ambulances, Toshinori left the scene to go to the hospital the boy way staying at. So he could hopefully introduce himself and comfort the boy. But when he arrived at the boys room, all he could hear was pure chaos from inside. He decided to enter, only to see a scene that would break his heart.

"GET AWAY FROM ME! I'M A MONSTER! I DON'T WANT TO HURT ANYBODY ELSE, PLEASE! STAY AWAY!" Izuku shouted at the people trying to comfort him and calm him down. But they couldn't do anything. Izuku was in a state of complete shock after being reminded of what he did, his emotions were all over the place.

Izuku then noticed a man in the doorway, he was a slender man with blonde hair, wearing a face that showed sadness. Izuku crawled back into his covers, when Toshinori heard him say something "P-please don't come near me, I don't want to hurt anyone else, I'm just a monster, please leave me alone…".

These words crushed Toshinori, a kid saying stuff like this made Toshinori feel horrible 'If only I could have saved him…' was all that he was thinking at that moment.

He snapped out of it and was about to say something, but a Doctor walked in and explained to Toshinori that Izuku needed some time alone, which although he was correct, he hated the fact that he couldn't even help someone even though they were right in front of him.

The Doctor then reassured him "You can visit tomorrow, where we will discuss exactly what Izuku's quirk is and what to do from here". Toshinori just nodded and left the room, slowly followed by the other people in the room, leaving Izuku by himself.

Izuku didn't sleep at all that night, he kept on thinking about what he did, 'Stay away!' 'Monster!'. He had ended the life of more than 60 people, his mother included, 'Some hero I am' is what he thought. 'I'm just a monster, I'm no better than a villain'. His thoughts were clouded with these things all night and into the early morning, he couldn't sleep at all.

The Next Morning -

Toshinori woke up at around 8am to start his day, a little later than usual, but after what happened yesterday, he thought he deserved it.

After waking up, he received a call from the hospital Izuku was staying at. Naomasa had informed the hospital about Toshinori's arrival the day before, explaining that he was the one that wanted to adopt Izuku, the hospital were both surprised and excited at the news, so they wanted to have Toshinori visit properly this time and as soon as possible.

They told him to come to the hospital at around 11am to discuss Izuku's quirk and his mental state, those last 2 words worried Toshinori, 'No child should have to experience what he is experiencing right now' he thought. Before the call ended, they informed Toshinori that he may be slightly surprised when he sees Izuku, all they said was that he had undergone some 'changes' in his appearance. This confused Toshinori but he just shrugged it off

When he arrived at the hospital, he was greeted by a Doctor who took him into another room to explain what they had found out about Izuku's quirk.

"Ok Mr. Yagi, are you ready for the explanation on Izuku's quirk, this will be very important for if you are going to go through with adopting him" the Doctor explained.

"Yes, I am ready" Toshinori replied. Though he was sad about what the kid did with his quirk, he couldn't help but feel intrigued by what he saw from the security footage he watched with Naomasa.

"Okay, so to put it simply, Izuku can basically manipulate gravity itself" this got Toshinori interested.

"How so?" Toshinori asked.

"He can basically control gravity within a certain area, we are unsure of the maximum distance, but we suspect it was how much area he covered in the incident, as he had no control over the quirk and probably used it at what his full power output is right now" the Doctor explained.

"Okay, but what do you mean when you say he can control it? Do you mean he can control it's direction? Because if so then that still wouldn't explain the massive force he was putting on those people yesterday" Toshinori explained.

"Yes, I was getting onto that part, but be warned, this is where his quirk gets ridiculous" Toshinori just nodded. "So basically, yes Izuku can control gravity's direction, but not just that. He can control the strength of gravity, measured in how much Izuku multiplies the gravity by Earth's gravity, so he can multiply Earth's gravity by however much he wants in a certain area, the limit being how much his own body can take. And just to make it even more crazy, Izuku's body is far more durable than the average body due to his quirk most likely".

Toshinori was completely shocked by what he had just heard, but still, he listened to the rest of the explanation.

"The drawback of his quirk is that when he uses a certain amount, then he experiences a fifth of that gravity's strength. For example, if he used 100 times Earth's gravity on an opponent, then he himself would only experience 20 times Earth's gravity. A small price to pay for such an amazing ability" the Doctor explained.

Toshinori couldn't help but agree with him, 'Only a fifth? That is such a small amount…' Toshinori thought to himself, but to his surprise, the Doctor carried on.

"But that's not even the best part of his quirk"

Toshinori was very confused by this statement. "What could be better than what I've already heard?" he asked with honest confusion.

"I don't know if you noticed from any footage you watched, but when people tried to use their quirks to escape from the force, they couldn't" the Doctor explained.

This shocked Toshinori "W-what? How is that even possible? That's like 2 quirks in one" Toshinori said trying to piece everything together.

"Exactly, we are just as confused as you are, all we know is that when Izuku applies enough extra gravity on someone, he can erase their quirk while they're still in his gravity area. It's honestly scary how good the quirk is" the Doctor finally finished explaining.

Toshinori just sat there, taking in all the information he had been given. He couldn't help but wonder just how he was going to manage taking care of this kid if he accepted Toshinori, but he didn't care, he wanted to help this kid and nothing would change that.

He then stood up from his chair, ready to leave and finally properly visit Izuku. But before he could, he was stopped by the Doctor.

"Just a warning, his appearance has changed since yesterday, it must have happened overnight. Just see it for yourself" he said and watched as Toshinori gave him a confused nod and left the room.

"You're about to be in for a really big surprise, everybody here was when we saw him" the Doctor said to himself and then got back to work.

With Toshinori Outside Izuku's Room -

'Okay, you are about to meet someone you might spend most of your life with, calm down' he thought to himself.

Toshinori took a deep breath before entering the room, but what he saw shocked him.

When he walked in he saw Izuku on the bed, his head in his knees. He was sporting a normal hospital gown.

Izuku flinched and looked up when he heard a noise from the door, he looked at the man and remembered him as the one who visited yesterday.

Toshinori examined the young boy, he noticed he still had the same diamond shaped freckles on his cheeks and he still had his emerald green eyes that Toshinori noticed yesterday. But what stood out the most was his hair…

His hair was now purely white, no green to be seen anywhere.

'How the hell did his hair turn white overnight? Did he dye it or something?' Toshinori wondered.

Then he realised that he had just been staring at the boy for the past minute, 'I should probably introduce myself' he thought.

"Hello there, Young Midoriya! I am Toshinori Yagi, or you can just call me Toshi!" Toshinori exclaimed to the boy in front of him.

The boy looked on in awe "T-toshi…" he said, while pointing at the Number 1 Hero, though he didn't know it was All Might, who knows what would have happened if he knew he was All Might…

"Yep! That's me!" Toshinori said with a big smile on his face.

The boy had a small smile on his face, but it quickly disappeared as he realised something. "N-no, get away from me! I don't want to hurt you!" Izuku was now panicking.

Toshinori quickly walked up to the boy and brought him into a fatherly like hug. "Don't worry, you won't hurt me, I trust you" he said, comforting the boy and making him feel safe.

He then broke away from the hug "And anyway, I'm tougher than I look" he said while flexing his skinny arms, which earned him a giggle from Izuku. That made Toshinori smile, knowing that this kid was still able to smile and laugh like that.

Then Izuku spoke up "T-toshi?" he asked, his voice was shaky.

"Yes?" Toshinori answered back, his voice was comforting.

"W-why are you here?" Izuku asked him.

Toshinori laughed a bit "I'm here because of you of course".

Izuku looked at him with curiosity "R-really?".

"Yep! I'm here to see you and nobody else" He said with a smile on his face.

His smile was reassuring, but then Izuku started crying.

Toshinori was very confused by this, he had never really dealt with kids this closely, so he didn't really know what to do. "A-are you alright?" he asked Izuku.

Izuku just looked up, wiped away his tears and nodded, saying "I just thought that everyone would think of me as a monster, so I'm just happy that you care for me, even though you don't know me properly".

These words broke Toshinori's heart 'He seriously thought that everyone thinks of him as a monster? Poor kid…' he thought, then carried on.

"I would never think of you as a monster Young Midoriya, and anybody that does is clearly too blind to see that kind heart of yours" said Toshinori with a smile.

Izuku then jumped at him and hugged him "Thank you" he said while tears fell on Toshinori's shoulder.

Toshinori was surprised at first, but quickly returned the embrace "No problem Young Midoriya". He was glad he could help the young child, he was a hero after all, but he would have to wait on telling Izuku that for a bit. But for now, he was just content with staying like they were, making sure the boy was safe from harm.

A/N -

And done with the first chapter! I seriously did not think that I would write 5 thousand words, but hey, I'm not complaining. This chapter was mainly a world building chapter with a lot of explaining, so sorry if it got boring at times, it's necessary for the story. Now when it comes to when the story will reach where the start of the Manga and Anime, I don't really know, it won't be in like 3 chapters, I know that much. I have a lot of things planned for before Izuku goes to UA, so we'll just have to wait and see.

Now to clear some things up, some of you observant readers will have noticed that All Might got his scar early, this is because it would have been much harder to incorporate him into Izuku's life if he was normal All Might. And it doesn't really make that much of a difference anyway. But Izuku will obviously find out his skinny Dad is actually All Might, probably in the next chapter.

Final thing before I go, just letting you know in advance, this fanfiction will be IzuOcha, it is way too precious to not have it and it plays really nicely into the story. Basically Izuku will meet Ochaco earlier in this story, like a lot earlier and she will help him with his struggles of his past. Which will eventually lead to an overprotective Izuku due to her helping him all those years.

Now I'm obviously going to ask if you can review, favourite and follow (only if you liked it) as it's good for getting my story out there. But honestly, I just want to write this story, I've had this story in my head for ages now and I can't wait to write the rest of it. So liking and all that stuff is appreciated and all, but I don't find it necessary :) Also, if anyone can tell me who made the art for the cover then that would be great, gotta give credit where credit is due.

Anyway enough of my rambling, expect next chapter on the weekend maybe, but until then, see you!