I really love Dadzawa, and I really love Aizawa ad Izuku interaction, so tada
Izuku is about 5ish in this (technically Aizawa would be about 20)

I posted this first on ao3 so I figured why not here too. The rest of the chapters won't have any other notes until 7 since I don't really want to add them, sorry

His lungs hurt, they hurt a lot

Izuku's mother had once told him that this feeling was called burning but all he could focus on was trying to find help.

Earlier his mother had said that they needed to run out to the store to get something and since it was so close to dinner time, she had promised that they could eat out, that Izuku could get katsudon.

"Kid."

But then while they were walking to the store Izuku had noticed a man hunched over in one of the passing alley ways, he had asked his mother if they could check on the man to see if he was alright, he regretted it now.

"Hey kid."

When they got to him, his mother had tried to reach out and ask to see if the man was hurt but before the words could even leave her mouth, his body just seemed to melt and gush as it turned to liquid and surged forward towards her. Inko had pushed Izuku out of the way, screaming for him to run while she struggled against the man made out of slime.

With scraped knees from the fall, he ran, faster than he had ever run before he was sure of it, to find someone to help, to find a hero. The few people on the street didn't seem to hear what he was crying about, simply thinking he had lost his mother and that she would hear his cries and find him or that a hero would help the poor child, but being ignored just seemed to make Izuku cry harder, making it harder for him to-

"Goddammit it kid."

The feeling of fabric wrap around his wrists and waist broke him from his daze as he was lifted into the air and came face to face with a rugged looking man in yellow goggles. Izuku knew what the man's name was, he was sure that he had seen him, if only in short snippets in the news, but he couldn't remember his name, the panic in his system making it harder to focus on that detail. But he didn't care if he remembered his name, he remembered this man was a pro-hero, just what Izuku's mother needed.

Aizawa had just started his shift half an hour ago, watching the streets of the smaller part of the city. Usually there wasn't as much activity there but it still needed to be watched over. Sighing he cracked his neck and gazed down from one of the roof tops, though he had taken a nap before his shift, he was still felt slightly tired, probably from dealing with Yamada being loud or his bullshit in general.

The sound of crying caught his attention and he turned to look down the street opposite of him to see a child with messy dark green hair, probably no more than 5 or 6, running frantically down the street. Dragging a hand down his face he called out to the kid but after the second time the brat didn't respond he decided to literally grab the child's attention.

Jumping down from the roof, Aizawa used his capture gear to grab the child in front of him, who had stilled the moment the it had wrapped around him. It was obvious the kid was distressed, if it wasn't the tear stained cheeks and flushed face that gave it away, the rapid fire of words that came out in a panicked and fearful voice was definitely the next big giveaway. Setting the kid down and releasing his hold over the child, Aizawa placed his hand on his shoulder to steady him.
"Alright kid, I'm going to need you to slow down what you just said so that I can understand you, got it?" Apparently the kid understood what he was told but was still too panicked to actually slow down, but he did manage to make out the words "slime villain", "mother" and "hurting her". Shit, alright, not another brat who got separated from their parents.

Hoisting the kid up into his arms, Aizawa used his capture gear to make sure he was secure before asking him if he could remember where his mother and the slime villain. After receiving a frantic nod, the kid that was now clinging to him began to point, and also yank which really did nothing considering Aizawa was holding him, in the direction of his mother.

Rushing down the street and mumbling out short "move!"s and "excuse me"s, the kid's grip tightened as they got closer to the alley way. He tried contacting Yamada and a few other people before he got there, if the villain was who he was thinking of, then he wasn't sure if he could actually fight and defeat the villain by himself.

Stopping just before the alley, Aizawa set the kid down and kneeled in front of him, telling him not to move from that spot before bolting into the alley way.

The sight that greeted him was a giant mass of sludge that seemed to completely surround a woman, presumably the boy's mother. Aizawa remembered the villain from a report a few days ago. It mentioned that the sludge villain was resistant to physical attacks while in liquid form, that combined with the fact that that the villain's quirk was definitely a physical type ment both his attacks and his quirk was useless against him. The sludge villain seemed confused at his presence, obviously not recognizing him, but laughed when he seemed to realize Aizawa must have been some hero.

Aizawa froze as he tried to figure out some way to help boy's mother before trying to surround the villain using his capture gear, like hell he was just going to stand around and wait for the others to get there. Pulling on the the cloth, it began to sink through the villain until it got caught on something, presumably the mother, or at least he hoped it was the mother.

Gritting his teeth and tightening his grip, Aizawa yanked the woman out of the sludge villain and surged forward to grab her before she could hit the ground.

"Crap, you're stronger then ya look, huh scarf boy?" the villain growled out "I bet you'd last longer than that useless invisibility cloak." it made to move towards Aizawa but stopped when another voice spoke up.

"Hey hey now, you don't want him" Present Mic stepped into the alley with confidence and ease, not even showing the fact that he had ran the whole way there. "Eraserhead over there is a real grouch, not exactly the nicest person to steal a body from, ey?"
The sludge villain seemed taken back by the man's entrance "Oh? And you would be a better one?"

Shrugging, Mic grinned up at the villain "Definitely, more pizazz and an amazing voice too! But I wouldn't want to upset my listeners with a disappearance so I can't really let that happen, ratings would go down and all."

As the sludge villain seemed like it was about to surge forward, Mic took a deep breath and let out an ungodly loud shout, just before Aizawa managed to cover his ears and shield the woman he was holding.

As the sludge villain smacked against the wall behind it, disoriented from both the impact and the noise, Mic pushed up his shades and let out a triumphant laugh "Another wonderful show for the listeners." Goddamn that pretentious ass.

Glaring at Mic, Aizawa was about to responded when he caught sight of the kid peeking out behind the corner, before he could even tell the boy to wait he was running forward, straight past Mic and towards him and his mother.
Aizawa was about to let the boy reunite with his mother when he noticed that- shit, shit no. He reached out to stop the boy but it was too late.

Barreling forward into the pro-hero and his mother, Izuku sobbed in relief as he grabbed onto her "Mom! I was so worried! I-I ran as fast as I- … Mom?" she wasn't responding to him, she was just laying there, eyes lidded and mouth slightly open and she just wasn't responding.

A new wave of panic swept over him as Izuku tired to shake his mother, trying to wake her up. "Mom? Mom! It's- it's okay now! The heroes came!"

"kid…"

Izuku looked back at the hero he had found, now remembering he was the hero Eraserhead. The man looked lost as he reached out towards him but Izuku griped tighter to his mother, refusing to let go "Mom's just tired right? She'll be fine after she sees the doctor….right?"

Eraserhead head looked pained at his words and turned to look at Present Mic who looked just as lost as him but when Izuku looked at him he turned away, unable to look at the boy.

Aizawa could see the realization in the boy's face and pulled the him forward into a hug just as he began to sob again, his entire body shook with each gasp. The crowd that was starting to gather adding only more stress.

Tightening his hug with the boy and slowly running his fingers through the fluffy green mess, Aizawa tried to calm him down, shushing him and telling the boy it would be alright, even though he knew it was a lie and just made his stomach turn with guilt.
Mic bit his lip before looking back at Aizawa "The police should be here soon… I'll make sure the crowd doesn't get too close."

Nodding Aizawa pulled the boy up with him as he stood, moving away from the body of the boy's mother. When he had first pulled her out, he didn't notice that she wasn't even breathing anymore, that the sludge villain had probably suffocated her before he had even gotten there.

Now he was holding onto her sobbing son, unsure of what to do to make the situation better, unsure of how to help the boy clinging to him with a death grip as he let out sobs that shook both of them to their cores.