The needle used to inject the serum hurt, and Izuku couldn't say he was a fan of having to deal with more pain. After a few seconds he started to sweat as his body got warmer and warmer.

It wasn't pleasant and he hated it. His mouth dried up and his stomach felt bloated. In fact his entire body felt numb and swollen. Then the pain started and he realized it wasn't him imagining things, he was really expanding.

Fear took over for the briefest of moments and he wanted to call out to his mom, to his only safe haven in the whole world but before he could….everything went dark.

Feelings and thoughts and senses all ceased to exist.

Izuku Midoriya was dead.

And then he wasn't, as feeling returned and some bizarre innate instinct pulled him towards other pieces that had the same instincts despite not being able to see them and then the rest of his senses returned along with his thoughts.

But now he was scared, in a laboratory with a doctor with some quirk serum or something and his mother nowhere in sight.

So all in all, the past few minutes had been terribly confusing.

"What's going on?! Am I safe? Am I in trouble?!" The trembling child asked as he looked around nervously, the last question being habitual due to some teachers blaming him for his bullies.

"IZUKU!" A familiar voice screamed in worry and both he and the doctor in the room, who seemed to be frozen in shock initially, turned to see the door slam open, a crying Inko rushing in and scooping her son into her arms. He gladly returned the hug, his only anchor to normality at the moment.

"Miss Midoriya I really must insist you stay out of the lab area-" Srijan rushed in, looking flustered but froze when the normal kind woman faced him with the most enraged expression the boy had ever seen on her face.

"YOU EXPLODED MY SON!" She shouted as she picked him up, ignoring his complaints of being to old for it. Only after a moment did he truly pick up on her words. 'I WHAT?!' "This experiment is over! You had better pray you never see me or my baby again doctor Srijan because if I see you I don't know what i'll do-

Izuku's eyes widened as he felt something in his body expand again. Was he going to explode?!

"Uh, Inko…"

No, his whole body wasn't going this time, just parts of it. His arms turned red and many different red tendrils seemed to sprout forth. Some sort of instinct went off in his brain, a natural understanding to what was happening and it wouldn't be good if he stayed in his mothers hands.

"Don't call me that! You have no right-"

Izuku only had a few seconds, so he acted. He kicked his mother in the stomach and cringed at her cry of pain but he needed to save her. He fell to the ground and somehow felt no pain as he smashed into the tile floor.

He looked around for something, anything to use. His eyes settled on a set of pencils on the table. He rushed forth and slammed his hands on top of the pencils, flinching when one of his hands landed on top of a set of scalpels he didn't see, cutting into him.

The tendrils of what was once his arms wrapped around both wood and metal and Midoriya felt odd as he watched them get wrapped up in his tendrils before they were pulled in and his arm returned to normal.

"What the…." The younger doctor muttered in confusion while Srijan looked on excitedly at the development.

"Izuku….what did you just do?" Inko asked as she held her stomach, using a table for support. Izuku flinched as he watched her limp toward him. 'Did I really kick her that hard.'

"…..I…..think I absorbed it…" The boy said quietly, as he felt a warm sensation spread throughout his body. He looked down at his arms that caused it before his eyes widened in excitement as he remembered the whole purpose of their visit.

Did this mean he had a quirk? If so, was it really just absorbing things….Surely there had to be more?

He focused on his hands and held them out in front of him, focusing intently on the mental image of one of the pencils he absorbed.

"Izuku?"

Once more instinct seemed to take other and he felt his muscles twitch at his command as his finger turned into the red tendrils before reforming but not as a finger. Instead where the greenette's pointer finger would normally be was a short pencil which made the child laugh happily. "I have a quirk!"

"Well yes, that's the whole point." Srijan grumbled but shut up quickly at the glare he received from Inko. "For the record, I was only trying to warn you in case something like that happened to you."

"Liar." Yuuma said as he fixed the older doctor with his own glare. "You lied to all of this. You have no idea what was going to happen, did you?!"

Both Midoriya's shared a look of confusion at the young doctors outburst.

"Now Yuuma, I get why you might be mad-"

"MAD? I'M FURIOUS!" The irate doctor shouted as Inko made her way to her son, ready to get as far a way as possibly and get him to the nearest hospital. "How many?! How many people have we injected with failed serums?! You told me they just came back when I wasn't around to report their failed results. But that was another fucking lie wasn't it?! They're all dead aren't they?!"

"Yuuma…"

"No! Enough is enough. I quit. You can stuff my apprenticeship up your own ass you vile piece of crap." The younger one snapped as he barged past Srijan and slammed the door open. Instead of leaving immediately, he turned to the Midoriya's with a softer, more guilt-ridden expression. "I truly and sincerely apologize for my role in any and all turmoil you have experienced today. I don't expect you to forgive me but at least let me drive you to the hospital, it is the least I can do after all this."

Inko was wary of the idea, cocking an eyebrow but really she just wanted as far away from this lab as possible. "Alright. Lets please just go."

"But the experiment…." Srijan went to complain but he was met with two harsh glares and the confused eyes of a child.

"Is over, I told you that." Inko practically snarled, making Izuku flinch. She immediately dropped down and hugged him after to apologize. "Besides, I thought the injection was the whole experiment."

"Of course not! The serum needs time to activate, though we can speed it up with the right conditions. If anyone was successful there were so many tests to run, things to check…"

"The only thing you're going to be checking is your mail Srijan, for a little pink dismissal slip." Yuuma threatened as he and the Midoriya's left the room.


The car ride was quiet and awkward. Inko sat with her arms cross, glaring out the window while Izuku fiddled with his new pencil finger, having nothing better to do.

"doctor Yuuma…" The boy piped up out of nowhere, catching both the adults off-guard. "What is my power? Don't you know?"

The doctor only took his eyes off the road for a moment, checking to see if Inko would allow him to say anything. She had a curious look on her face and she waved her hand flippantly, seemingly allowing it.

"Well, take what i'm about to say with a grain of salt, as I don't know how much of what Srijan told me was truth, and was lies but from what I understand…..My educated guess is that the experiment didn't go quite right in some ways, but perfect in others. You were supposed to just….evolve, not combust or anything like that. I think we failed to grasp just how the quirk factor works. I presume you were giving the glass analogy by my….former….colleague?"

"Yes, I was."

"Well clearly that glass does have something to do with how we are locked out of natural evolution, just not in the same way as someone with a quirk is. Because of this, I think the working version of the serum has tried to produce the closest possible result to evolution it can manage, filling up your sons quirk factor. A bio-engineered quirk if you will."

"But what is it? It's weird." Izuku asked as he turned his finger back to normal.

"Well, there's no way to know for sure until we get to the hospital and have you diagnosed but we do know it involves absorption, shapeshifting and considering your lack of a scar, some kind of healing factor." The doctor listed off and the greenette's eyes widened in surprise and wonderment. "My best guess, your new 'quirk' causes your biological makeup to become unstable, allowing it to break down and change."

"Biolo-Biogica-Huh?" Izuku stumbled over himself and the young red haired doctor couldn't help the small chuckle that escaped him.

"Your body mass is easy to break if you want to. Clearly its also easy for you to fix." He simplified and the greenette smiled happily.

"I have unstable bio…biomass! Unstable biomass!" The greenette announced excitedly and Inko, despite everything felt a small smile tug at her lips. Yuuma laughed a little as the hospital came into sight.

"Unstable Biomass huh? Sounds like a great quirk name, that's for sure."


Once they had arrived at the hospital, they had managed to convince them to see the newly powered boy, unsure of how safe he actually was. His earlier explosion didn't inspire confidence that his power was 100% safe.

Yuuma ultimately did most of the talking, explaining to the doctor that came out to see them everything about the experiment and what had happened, as well as his theory on what was happening.

The doctors look of disgust and her sudden insistence on getting Izuku into a hospital room once the red haired man was done did nothing to help the torrent of emotions inside Inko.

They were allowed in with the boy as they prepared to do the check up at least which helped a little. The mother put up with Yuuma's presence due to his knowledge about what might be happening but she still did her best to ignore him.

"Alright then, that should be everything." A female doctor with luscious brown hair and a kindly smile called Hiko said, as she picked up a notebook and pen. She turned and gave a slightly dirty look to Yuuma. "So I have already heard what's happened from a physical standpoint."

She turned back to Izuku and gave him her brightest smile.

"Now I need to know how you feel, little champ." She said and Izuku pouted, crossing his arms.

"I'm not little! I'm nine!" He said and the brunette giggled lightly.

"I'm sorry, how are you feeling big champ?" She asked again and the greenette looked satisfied.

"I'm….weird but happy." He described with a finger to his chin. She scribbled down his answer in the notebook before continuing.

"I presume your happy because of your quirk?" She asked and the child nodded his head so fast Inko was worried it might fall off. "And what do you mean by weird? Can you explain that to me?"

"Uh…well I feel warm. Very warm, especially when my powers start working. I also feel….empty. like I don't have stuff inside that I should." The boy explained, causing the doctor to look up confused.

"That's….concerning. I think we're gonna want to get an x-ray done while you're here." Hiko said as she finished writing down in her notes. "Now, hearing about your powers only tells me so much. Actually seeing it will be very useful, so we're gonna try some tests to figure out how your power works, ok?"

"Ok…what do I do?" Izuku asked and the doctor laughed lightly.

"Let's see this pencil finger your mom told me about." The brunette requested and the child complied, his finger briefly bursting into a bunch of red tendrils before reforming as the absorbed pencil. "That's incredible, Midoriya! Is there anything else you absorbed that you can try to create?"

"Um….when I absorbed the pencil I think I absorbed something sharp as well. It was like a weird tiny knife without a handle…."

"You mean a scalpel?" Yuuma questioned, as he took out one from his pocket, prompting questioning glances from the girls. "I keep spares in case we lose any. Is this what you absorbed?"

"I think so." Izuku said as he focused on his finger next to the pencil. This time the whole finger didn't burst into tendrils, just his nail melted into a red liquid like substance before forming as the scalpel. "Awesome!"

"Huh….well….Ok then Freddy Kruger.." Hiko muttered under her breath before looking over her notes. "Something else I want to try before we get to the x-ray. If you could please go stand at that wall, Midoriya?"

The boy complied, running over to the wall and turning to face the adults excitedly. Hiko made her way to stand beside the other two adults after picking up what seemed to be a chunk of wood from a drawer. "What now?"

"Well, from what I've seen you're body is shifting at your command. You can bring out perfect recreations of what've you've absorbed, making the part of your body. That does beg the question, what can you create without absorbing anything? What do you think champ, is there anything you can try to make without absorbing stuff before hand?"

"Hmm. Oh, animal claws are cool! We were watching nature videos in school and some animals have really strong claws!" Izuku said excitedly at the thought. Hiko gave a look towards the eldest Midoriya, who had started to have tears come into her eyes and the smallest smile on her face.

"Ok, let's see if you can do it." Hiko agreed with an encouraging smile. The young Midoriya closed his eyes and focused, holding his hands out and imagining massive sharp claws in place of his hands. He spent time on the mental image trying to make them look exactly how he wanted before he developed them. A few moments passed and for a second, it seemed as if the claws wouldn't come when the young boys arms exploded into violent flailing tendrils that wrapped around themselves and built back up, seeming to become like armor around the arm and palm of his hand. One of his fingers was missing and the rest were all replaced by long sharp claws.

He laughed as he looked at them, the claws long enough to reach from the small boys chest to the top of his head easily. They were intimidating, pulsing red and daring anyone to try to stand against them

"Ok Midoriya. I'm going to throw this block of wood at you, ok? All I want you too do is slice through it if you can." Hiko said as she started to rear her arm back with the wood she picked up. The boy got into position and the doctor chucked the wood. It got closer and closer to the boy when he tore his new appendages down through the air and obliterated the wood with ease, leaving the three adults looking on in shock. "Holy….Ok, it's safe to say those claws are incredibly powerful. I'd argue they could tear through a human without any resistance."

Yuuma and Inko just gulped.

"Ok Midoriya, any other ideas?" The woman asked and the boy just shook his head. "Alrighty. I think it's time we got you x-rayed then."

Izuku walked forward, forgetting to change his hands back to normal and he tripped, not used to the weight of them. He fell forward and cried out as one of the claws bended back, slicing into his stomach. The adults all hurried to him alarmed as the claws disappeared in a flurry of tendrils.

They helped the boy right himself and cringed at the large hole in his stomach where blood quickly started to gush from. Inko felt like she would be sick but before any one could do anything else, the wound suddenly stitched itself closed with some smaller tendrils before it turned back to a normal flesh color.

The adults looked among themselves before Hiko shook her head. "Guess that confirms the healing theory. Come on, lets get you to the x-ray. That didn't hurt too much did it?'

The greenette looked up at her but instead of tears like one might of expected they were instead filled with confusion. "It didn't hurt. It felt weird though."


No one knew what to think as they looked at the boy's x-ray scans. No bones or little outlines of any kinds of organs were visible. All that was there was a solid grey mass to represent the boy's body and that was it. The most that they could see was little outlines on the outer edges of his body.

"Doctor Hiko….what's going on with my son?" Inko asked worriedly and the brunette leaned back in her seat, seemingly just trying to wrap her head around what she was seeing.

"Well miss Midoriya….In the simplest terms your son has zero vital organs, no brain….everything typically inside a human body that makes it work isn't there. The fact your son is walking, talking and as coherent as he is should practically be impossible." Hiko explained before pointing at the few little outlines on the scans. "I think though, considering what we've seen so far that they aren't missing. They've merged with his skin and muscles. His brain and lungs and everything seem to be in his outer body which is why even when he was…exploded he could reform. That explosion must have been everything absorbing into itself and unsure of how to continue once it was all together. The body then just combusted and reformed in an attempt to fix itself. Put simply…..I don't think your son can die normally anymore."

"What the…." Was all the green haired woman could mutter as she looked at the scans. Hiko stood up, grabbing a marker from her desk and walking to Midoriya who sat upon a metal table.

"Here sweetie, do you think you could do your absorption thing again?" The brunnette asked as she gave him the green marker. He focused on it for a moment before little tendrils suddenly sprung from his hand, not actually removing the whole hand this time and took in the marker. He looked up excitedly and she gave him a thumbs up. "Great job, j'll be back in a moment, i'm just going to scan you one more time now."

It only took a few moments and the new scans came out practically the same, but there was a new outline in his hand. "So, just like his organs and such, anything he absorbs is made part of his flesh body. I guess that means he can reproduce his normal organs if he wants to but he doesn't need to…"

"Anything else doctor?" Inko asked, staring at the scans like they held the key to the universe.

"Well…I think its safe to assume that even if there is a limit to his absorption, he might be able to absorb people." Hiko said and Yuuma massaged his head while Inko just took a deep breathe. "Something he should not do no matter what. At best, that person will become a part of him, like two brains sharing one body forever."

"At best?!" Inko exclaimed incredulously. "and at worst?!"

"Your son can take that persons form and maybe memories but they die without any body left behind." The woman said and the sobering realization of how terrifying such a power could be washed over them. "I hope you're son has a strong moral compass, that particular aspect would be a villains wet dream of a quirk."

Hiko got up from her seat, helping back onto the floor. "Other than that, your son is….healthy, in a relative sense. Potentially healthier than any other living human perhaps. I think that's everything, unless there's anything else you had in mind?"

Inko and Yuuma both shook their heads, and Izuku started to jump up and down excitedly. "I have a quirk, I have a quirk! I get to have powerAGGGH!"

Suddenly without warning, the boys legs exploded into tendrils as he was jumping and rocketed him into the roof with a loud crashing noise, before he fell back down to the floor.

"I GOT HIM!" Yuuma shouted as he rushed forth and caught the boy before he crashed into the floor. He barely looked dazed, just shaking his head embarrassed.

"I uh….got too excited I think." The boy muttered shyly as the man set him down. Hiko took her seat once more, opening her notebooks again.

"This is one serious arsenal you've given the kid." She muttered as she wrote something down. "Ok Izu, any ideas what that was?"

"Not really. Maybe my powers boost me?' He wondered as he looked at his hands, ideas forming. He focused and his hands exploded into tendrils once more but this time he didn't let then reform. Hiko looked surprised and went to touch them when Yuuma quickly grabbed her and pulled her back.

"Woah! You're the one who pointed out he can absorb people, be careful!" He reminded her and she nodded as her cheeks flushed in embarrassment.

"You're right, that wasn't a smart idea." She admitted before going back to her cabinet and picking out another piece of wood.

"Why is that cabinet full of scrap anyways?" Inko asked with a quirk eyebrow while Hiko placed the wooden block onto the tendrils and gave the boy firm orders not to absorb it. "Quirk testing can require a lot of…specific stuff. You wouldn't believe some of the things we have to keep in stock. Heck, some can't be even mentioned near young ears."

While Inko and Yuuma processed that information, Hiko let go off the piece of wood and it simply hanged there, without the tendrils even wrapping around it. "Interesting. Now, Sweetie, please try to crush it without absorbing it."

The boy did as he was told and the tendrils slowly wrapped around the oak before squeezing tight. Slowly but surely the wood splintered and cracked before it was crushed by the boys once hand.

"Ok, so that's what just a few tendrils can do…" Hiko muttered as she brought out a third piece of wood. Inko briefly felt like she was in a carpenters and not a hospital room. "One last time, try to crush it without any powers please champ. Just you're bare hands ok?"

The greenette looked confused as he was given the block but nodded and squeezed the oak in his hands. It quickly turned to dust with almost no resistance. The brunette doctor just blinked.

"So…you definitely posses some kind of limited super strength as well, good to know." Hiko muttered as she wrote down some more notes before the kind woman faced the increasingly powerful boy. "Super strength, super jumping and i'm willing to bet enhanced speed as well from that super strength depending on how you apply it."

"That's so cool!" Izuku said excitedly as he started to continuously burst and reform his finger, looking at as if transfixed.

"I have just one more test I think then, if we don't get hit with any more surprises." Hiko said, moving a table out the way to make sure a large part of the wall was accessible. "Izuku, the last thing I want you to do is try to stick to this wall with your tendrils. Can you do that?"

"I think so." The youngest in the room nodded and walked up to the wall, no taller than the cabinet beside him making the whole task quite daunting. He placed his hands on the wall and a second later little tendrils from his arms all connected onto the wall. He slowly made the let go and climbed up a bit, doing the same with his legs.

"That's great. Kind of slow but useful!" The brunette praised and Midoriya got a look of concentration on his face.

"I think I have an idea…." He said and suddenly the tendrils all disconnected before connecting again, repeating the process at incredibly fast speeds. He continued to climb, scaling higher much quicker. "It worked!"

"Alright!" Hiko announced happily. She went to ask him to come back down but before she could the boy was suddenly stood on only his two feet, supporting himself on the wall and laughing. The he started running, before ending up sprinting upside down along the roof and coming down the other wall. Inko quickly grabbed him and pulled him into a hug.

"Izuku! Don't get carried away!" She chastised and he remembered his manners, quickly apologizing.

"Oh, it's fine. The cleaners might be a bit annoyed but I think we can brush it off considering how big an occasion this is." The doctor brushed it off as she pulled out a slip from a drawer and wrote down some stuff on it before turning to face the younger Midoriya for the final time. "Ok, Izuku. Now's the big moment. What do you want to call your new quirk."

The boy didn't hesitate with his answer.

"Unstable Biomass!" He said happily as beamed brightly at them all.

"What a delightful name. You know you're lucky you get to name it now, most people get stuck with their four year old choices and regret it." Hiko said with a laugh, writing her signature down on the slip she pulled out and giving it to Inko. "Here, you probably didn't know these were a thing considering they're recent additions and your son wouldn't have had any need for one previously. It's a week's pass to allow him to use and figure out how to control his powers. Considering your son's extensive abilities and excitement, your gonna need it."

"Doctor Hiko, may I borrow a piece of paper and a pen?" Yuuma piped up and the woman quirked a brow but handed him her notebook. He quickly scribbled something down before ripping put the sheet and giving it to inko. "Here, this has my number on it. If you never call it and throw it away i'll understand but I want to do everything I can to make up for what happened earlier. If you have any questions and can't get a proper doctor like Hiko here, I may be able to at least provide some theories or that that might help, as well as some ideas for how to help develop your sons new powers."

Inko looked down at the seven digits, then to her son who was wiggling his pencil finger happily. There was no way she could handle it alone, that much was certain.

"I'll consider it. Come on, Izuku. Thank you so much doctor Hiko."

"Bye awesome doctor people!" The greenette said as he waved goodbye, and with that, the Midoriya's left.

"So…what are you gonna do?" Hiko asked curiously as she sat down. Yuuma just sighed.

"Make sure my boss gets fired. How hard can that be?"


In the lab, empty and cold, a body lay upon the table. Fear gripped at his heart and he didn't know if it was truly worth it but it worked on the child so it had to work on him. He'd have no other opportunities to try.

Srijan injected himself. A few moments passed and if anyone had been outside the room all they would of hear was a single deafening noise.

SPLAT!