Okay, let's get this clear.

The serum thing, it's done. It'll be mentioned a few more times, mostly in passing, but it's unlikely to ever be a main plot point again.

Anyway, onto the story.

Not with a ten-foot pole.

Chizome Akaguro, Aka, Stain the hero killer, had a problem.

And that problem's name was Kiba Midoriya.

The kid was an up and coming internet star, gaining a surprising amount of followers for her age, mostly due to her personality, cute factor, and power.

Normally Stain wouldn't have cared in the slightest.

However, the problem was that she wanted to be a hero. And she wanted to be a hero to "expand her followers to one day take over the world."

So naturally, Stain who wanted heroes to only have pure motives had an issue with this.

Now some would say that she's just a silly child and that she would grow up and see how ridiculous this was.

Stain would argue otherwise. People with powerful quirks, which Kiba most certainly had, tended to be arrogant, whether they be a hero or a villain. And the girl was clearly a rich spoiled girl, meaning she was definitely gonna keep that arrogance as she grew up.

All and all, the girl would most likely grow up to be another fame-obsessed, superficial, fake hero.

Which is why Stain wanted to beat the shit out of her.

Not kill her, she was very young. Meaning she could perhaps be "educated" instead of slaughtered.

Stain wanted to sneak into that overly large house of hers and stab her a few times, break a few bones, leave some permanent scarring, and then leave.

Normally this wouldn't be a problem. It should be easy to beat up a child.

But Kiba Midoriya was no average child.

Calling this child strong would be like saying the sun was a bit bright.

She was ridiculously strong, able to fight giant Kaiju at full power, could run a mile faster than he could run ten feet, and could survive falling from skyscraper level heights.

In other words, in terms of fighting, she was out of his league.

Sure he was way more experienced and skilled, but that didn't matter much when power difference was so apparent that he wouldn't even be to physically harm her, and one hit would be enough to crush his skull in.

But that wasn't the real problem. If it was just Kiba by herself, he could beat her. Not at full power, but she wasn't always at full power. Her power relied on how much blood she'd consumed. Meaning that there must be a time she would be weak enough for him to beat her.

But it didn't matter much, because it wasn't, just Kiba.

Her whole family was a problem.

Firstly, if he wanted to beat Kiba then he'd need to do it when she was low on blood. However, she seemed to almost constantly be followed by her brother Fu, an infinite supply of blood.

Secondly, there were the two other siblings she'd shown off Shiruku and Kai, both of whom he wasn't exactly sure he could beat, at all. With both of them being similar in power to Kiba, but seemingly not sharing her weakness.

And thirdly, was the sister Sansan Midoriya, who he definitely could not beat. She seemed to either be made of goo or acid, didn't matter, either way, he couldn't hurt her and she could hurt him.

Now, Stain had wondered why the hell there were so many kids with grossly overpowered quirks in one place.

And after a bit of digging, he figured out why.

Because they were part of a program that collected overpowered children and kept them in one place.

Meaning not only would he have to deal with the children he already knew about, but also all the children he didn't know about, would also be grossly overpowered and dangerous. Oh, and he'd also have to deal with whatever security there would be for the house as well.

Even if he had a death wish that big, he wouldn't choose to die at the hands of seven-year-olds.

The only person who I will allow to defeat me is All Might himself! Stain thought.

So no, as much as it pained him to see someone like Kiba Midoriya continue to arrogantly state she wanted to be a hero for such self-centered reasons, he wouldn't do anything about it. Because he couldn't. He could in theory, just stalk her until she was weak enough and far away from everyone else for him to attack her, however, it seems she rarely ever left her house, and never left without one of her siblings it seems.

Of course, there would have to be exceptions, at some point she would leave the house alone, but the amount of time Stain would have to dedicate to find that specific moment, just wouldn't be worth it. He could spend that time killing actual pro heroes.

For now, the girl was safe from his wrath. For now.

Security

Izuku was doing more paperwork in his office when Yami came in on a Beowulf.

"Oh, hi Yami. Is um, something wrong?" Izuku asked him.

"Lot's of energy," Yami told him.

It took a second for Izuku to figure out what he meant. "You mean you have lots of negative energy to make Grimm?"

Yami nodded. "Want to be useful."

"Oh." Izuku smiled at him. "Thank you Yami, but it's your quirk, are you sure? Don't you want to use it for yourself?"

"No," Yami said bluntly. "No need."

Huh. Well, I guess he barely does anything except sleep and eats. Izuku thought. But still, what could I use the Grimm for? Well...what is the limit of what Yami can create. Maybe I can help him explore that.

He would probably use the Grimm as security. The griffin that had washed Kai were used to patrol the skies around the house. Make sure that nothing could come out of the air and pluck someone away...again.

"We should see what kind of Grimm you can create," Izuku told him. "Let me finish up some more work, and then we can go to the library and then the training room."

"Hm." Yami nodded and laid down on his Beowulf to wait.

Half an hour later in the training room.

The two of them arrived in the indestructible room, with the Beowulf carrying a load of books. Kei had also joined them at Izuku's insistence, having met up with them in the library.

"Why books?" Yami asked, wondering why Izuku had wanted them to bring a crapload of books with them.

"Well, I want to see what kind of creatures you can create," Izuku explained. "You created a lot of Grimm just based on animal's you saw, but you also created a Griffin, I guess Kiba suggested that, so that means you're not limited to things that exist in the real world."

"Griffin's aren't real?" Yami asked, somewhat shocked.

"They aren't?" Kei asked, looking a bit dejected at that.

"No, sorry," Izuku said, much to Kei's disappointment. "But that means that with enough energy, Yami could create pretty much anything."

Yami looked, only slightly amazed by that idea, which still caused him to show more expression on his face than he did normally.

"Oh! Oh! Can you create a snake! A big snake! With two heads!" Kei asked, as her imagination started to go wild. As Izuku intended.

"Okay, maybe we can talk about what it will look like and-" Before Izuku could finish, Yami had already started creating the Grimm, barfing up the black goop on the floor. "Oh."

From the black goo, rose a black snakehead, twice the size of Izuku's own head, showing that once again this Grimm was big.

The snake Grimm slithered out of the pool, showing that it was in fact huge, and when it finally finished emerging, instead of a tail on the end, it was a white snakehead.

The snake was big, roughly around eight feet in length, and two feet and a half in width. Half of its body was Black with a few white patterns, and the other half was white with some black patterns.

"AHHHH! It's perfect!" Kei practically had stars in her eyes, and she ran up to the snake and hugged it with her might, her snakes hissing happily and rubbing against the Grimm.

Interesting, these patterns are too elaborate for Yami to come up with. Come to think of it most of the Grimm are too elaborately designed. I wonder why they look like this? Izuku pondered, before realizing something important. Wait! What am I gonna do with this thing!?

It's not like the snake was too big for the house. But a giant snake roaming the house wouldn't exactly make the shy kids or the new kids feel at home.

Maybe I could use it in the vents? Make sure that no one can sneak in through them? I guess that could work. Izuku watched Kei snuggle up to the snake, a huge smile plastered on her face. Maybe let Kei have one too. See if we can make it smaller.

Suddenly the door opened, and a very pouty Kiba ran in with a book in her arms.

"I heard you were creating new Grimm! And you didn't invite me!?" Kiba sounded more than a little offended.

"Oh, sorry Kiba I thought you were busy streaming?" Izuku asked her.

"I was, but I could have stopped." Kiba crossed her arms and pouted, holding the book to her chest.

Kiba's displeasure dissipated almost immediately when she saw the snake and was replaced with excitement. "Ah! Of course, Kei would suggest a snake! And what a wonderful snake it is! A truly impressive monster! What shall we name this creation!?"

"That's right it needs a name!" Kei agreed.

The children racked their heads trying to come up with a name.

Izuku was the first one to speak. "How about, Taijitu?"

"Taijitu?" Kiba repeated.

"Y-yeah. You know, like the symbol. The circle that has black and white on it. Um...let me show you." Izuku pulled up a picture of it on his phone. "This symbol."

"Oh, I've seen that!" Kiba pointed at it excitedly. "Still...it needs something more...ah! King Taijitu! That's perfect!"

"Hello, King Taijitu!" Kei shouted as she hugged the big snake.

"Sure. Sounds cool.' Yami was, as usual, neutral to the names given to his Grimm, but he wasn't against it and it made them happy so he rolled with it.

"Alright let's make another one!" Kiba opened the book she was holding, showing them a picture of a Manticore. "This is a Manticore! It has the body of a lion, a scorpion tail, and bird wings and it breathes fire!"

...This may have been a mistake. Izuku thought.

I'm ok.

"What do you mean five!?" Izuku almost shouted into the phone.

"Well here is the thing. You want all these kids out of the facility, we want all these kids out of the facility. So we're just gonna increase the number of kids we give you until you otherwise." Namae told him. "Of course you could just ask us to lower the amount. Of course, that will mean some of the kids will have to stay here longer, but if it helps you get a little more rest time I guess it's worth it. Not worth it to those kids, but worth it to you I-"

"STOP!" Izuku snapped.

Izuku was so tired of her blatantly trying to manipulate him, and so tired of it working. That, combined with how tired he was feeling in general, he just...snapped.

Immediately after his small anger spike, he was filled with remorse.

"Uhh...maybe we should...stay at three for now," Namae said, taken off guard by Izuku's uncharacteristic outburst.

"I-I...yeah." He didn't want to leave those kids in the facilities longer than he had to, but after that outburst, he figured he should slow down, otherwise, he might snap at the children, which is the last thing he wanted to do.

"Great. We should have them to you in two days. I'll send the information about the kids via email." Namae said. "And uh...maybe hire some people. You sound stressed."

"I know," Izuku muttered, taking a long sip of his tea. "I-I'm sorry for my outburst. Please forgive me."

"It's fine man. Just uh...maybe see a therapist. Lord knows you need one." Namae said. "Anyway, Namae out."

She hung up, leaving Izuku alone in his office to prepare.

He decided to spend the next few minutes between now and when the info on the new kids would be sent, relaxing in his chair with his tea.

The warmth of the calming tea soothed him slightly, as he leaned back and closed his eyes.

However panic suddenly overwhelmed him, as he very nearly fell asleep.

Can't sleep yet, still have work to do. Izuku reminded himself.

Izuku moved his calming tea away from him, and instead took a cup of coffee he kept on hand.

As he was drinking his cup of wake up juice, there was a knock on his door.

"Can I come in?" It was Yami.

"Ah, yes of course," Izuku told him after gulping down his drink.

Yami walked in, and if one looked closely, they could see that his expression was...a bit more concerned than usual.

"Something bad happened?" Yami asked.

"N-No." Izuku denied. "Nothing's wrong, why would you ask?"

"Bad feelings...exploded." Yami tried to explain as best he could.

As usual, it took Izuku a second to figure what Yami was saying, his inexperience speaking combined with his unique way of seeing the world, made it hard to figure out what he was saying at times.

Eventually, Izuku figured it out. He must have sensed when I snapped at Namae.

"I...got upset for a moment. But it's fine." Izuku lied.

Yami scowled at him. "Liar."

"Huh?" Izuku was taken aback. Yami had always been so passive, and cooperative since he got here. This was the first time he's shown any hint of disapproval towards Izuku.

"You're getting worse," Yami told him. "More bad feelings, every day. Not anger, lot of fear, lot of sadness, lots of other things. You are not okay."

Izuku was really caught off guard. Although in hindsight it should have been obvious. Yami could literally see emotions, so of course, he would notice if he'd been stressed out, although he didn't seem to be able to identify stress, just seeing it as another bad emotion, most likely due to lack of experience.

Still, he would have to explain this away somehow. Preferably in a way that didn't make him worry.

"Listen, I just have a lot to do so I've been stressed out recently." Izuku tried to explain.

"Stress?" Yami repeated, wondering if that was that bad feeling he didn't recognize.

"Yes, stress," Izuku told him. "Don't worry, I'm going to hire some new helpers soon and-"

"Lair." Yami interrupted. "I see you lying."

Izuku's eyes widened. "Wait, you can see lies?"

Yami nodded. "You feel worse when you lie."

Oh, that's actually really clever. But it means I can't lie to him! Izuku didn't particularly like lying to the children. But he would do so if he thought it was in their best interest, although he never felt good about it.

"W-well you see…" Izuku desperately searched for a way to keep him in the dark without lying to him.

Meanwhile, Yami was getting frustrated. He had come here to see what was bothering his father and hopefully make him feel better, but that feeling, stress, was only increasing since he got here.

"What's wrong?!" Yami repeated aggressively.

"I-I-I…" Izuku sighed. "It doesn't matter how I'm doing. Or what's wrong. I'm just really stressed about my work. I'm trying to fix the problem but it's taking a while and I'm having some issues. But it's nothing for you to be worried about."

Yami growled. "But-"

"Yami!" Izuku shouted, causing the boy to flinch. Having never heard Izuku shout before. "Just...let it go...please."

Yami looked up at his father. He really...really wanted to make those bad feelings go away. But he only seemed to be making things worse.

For now, he would back down. But he'd try something else.

Yami bowed his head. "I'm sorry dad."

"No, I'm sorry. I shouldn't have yelled at you like that." Izuku apologized. "You were only trying to help. H-how about I make steak tonight."

That should have excited him, and it did make him feel a bit better, but he was still very upset over his failure to help Izuku and left without saying another word.

Once he left, Izuku's head fell into his hands, as shame and guilt ate away at him. I can't keep going like this. I've started yelling at the kids! I need to hire help!

Suddenly, Izuku's phone vibrated, he took it out and saw a notification that he had gotten the files on the new kids.

I'll look at workers...after this. Izuku told himself.

Hours later

It was late at night. And many of the kids had fallen asleep.

However, as usual, the nightlife of this house was almost as active as the day.

Kids like Sansan and Fu never needed to sleep, so they often stayed up all night.

Kiba liked to go outside during the night, as the sun would not be around to bother her.

Fukunoko would like to sneak out of her room, to do things around the house that she couldn't do in the day because of the number of people.

Izuku was also often awake during the night, doing work.

Tonight, however, someone else was awake. That being Yami.

Fu was in the library, reading a book, when Yami, riding on his Beowulf as usual came up to him.

"Yami? Is something wrong?" Fu asked him.

"You smart," Yami said.

"You mean, you're smart." Fu corrected

"No, you smart," Yami told him.

"No, I mean you said it wrong," Fu said. "It's your not you."

"Oh." Yami realized his mistake. "You're smart."

"There you go. And yes, I am." Fu said. He was very aware of his own intelligence compared to everyone else, thanks to the emotional distance his quirk gave him, one of few benefits it afforded him.

"Problem. Dad has lots of bad emotions." Yami tried to explain. "Tried to help. Made it worse."

Fu nodded. "How bad is it?"

"Bad," Yami said.

"No, I mean...is it worse than Fukunoko?" Fu asked.

"...Al-most," Yami said.

Fu frowned. I knew Izuku wasn't feeling good, but if it's that bad.

The undead minor thought about the situation. Confronting him, according to Yami, only made the situation worse.

Fu was smart, smart enough to realize when he needed help.

"We should ask Ochaco for help next time she's here," Fu said. "Right now we should just try not to make things harder for him."

For whatever reason, the two boys had a bad feeling about this. Like whatever they had just stumbled on was the tip of the iceberg.

They would just have to wait and see how this all played out.

Alright, the next chapter is another three more kids.

Please review and have a nice day.