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Izu's other Dads (TiaLee), Mosscantwrite’s oneshot collection, BNHA Fics that Nourish the Soul
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Published:
2022-03-07
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2022-03-14
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4,362
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2/2
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Uproot

Summary:

All For One failed his brother all those years ago and it still stung to this day but he had Izuku now and he wasn't going to let anyone get in the way of that.

Chapter 1: Remove Invasive Species

Chapter Text

All Might was a pest. A nuisance. A downright pain in his ass. Out of every single holder of One For All he was by far the most irritating of them all. If he never saw that stupid smile again it would be too soon. Unfortunately he couldn't just burn every single piece of All Might merch in existence. That would be too time consuming and no doubt the moron would make more for all of his adoring fans.

 

Shoving his bitter thoughts out of the way He finally stopped glaring at the box of All Might band aids he was currently holding. The only band aids that they even had stocked in the medicine cabinet. Something he would have to rectify soon. 

 

He reluctantly plucked one of the god awful monstrosities from the box and unwrapped it, smearing an adequate amount of antibiotic ointment on it before gently placing it against one of the cuts across his son’s cheek. The moment he got his hands on that Bakugo brat he'd show him just how insignificant he is in the grand scheme of things. 

 

Izuku came home absolutely covered in dirt and blood. He had numerous heavily bleeding scratches all over his face and he was completely unable to see from all the dirt in his eyes. He’d had to hold Izuku still while he washed his eyes out as gently as he could- he made a note to get his hands on some kind of cleansing quirk afterwards. It was only once all the dirt was gone from his eyes and he’d had a quick bath that he could begin to clean and bandage all of the cuts.

 

Of course that was when he realized that all they had were All Might themed bandages. He really hated the bastard. That Bakugo brat always went on and on about how he’d be the next All Might. So far the only thing the bastard had managed to accomplish was inspiring violence. Why they show any hero fights on every available TV channel will never make any sense to him. Kids are exposed to the violence of the world and told it’s admirable. The only thing such things encourage is more violence and the Bakugo brat was exhibit fucking A.

 

“Daddy,” Izuku whispered, drawing his attention away from his spiraling thoughts.

 

“What is it, Izuku?” He kept his voice even, something he thankfully had centuries of experience doing even under the immense pressure of his growing fury.

 

“Am I in trouble,” he slowly asked.

 

“That depends. Will you tell me what happened?” He already knew what happened and he didn’t even need a quirk to tell him. It was always that Bakugo brat. He had no idea why Inko insisted on shoving the two together. Just because she and Mitsuki were friends didn’t mean their kids had to be. And they clearly weren’t.

 

“Kacchan was being mean to the other kids. I told him to stop and he got mad.”

 

“Is that when he did this to you?”

 

Izuku hesitated but nodded nonetheless. 

 

Hisashi sighed and ruffled his sons still wet hair. “You’re not in trouble.” He is going to be having a long talk with Inko after Izuku goes to bed though.

 

“Promise?”

 

“I promise. Now.” He stood up with Izuku in his arms and stepped out of the bathroom. “What do you think about having katsudon for dinner tonight?”

 

The wide eyed excited expression that spread across his son’s face made him smile.

 

 

As he put him to bed he pressed a kiss to Izuku’s temple activating one of his quirks that would make sure he slept through the night. The sleep will help along the healing process and keep him from waking up during the perfectly civil conversation he was about to have with his wife.

 

He pulled the covers over Izuku’s shoulder and swept his eyes over the room in one final check before he strode out silently shutting the door behind him. He came to a stop in the doorway to the kitchen where Inko was placing dishes in the dishwasher.

 

“Inko, we need to talk,” he said flatly. He wasn’t lying when he said he held a certain fondness for Inko but it was nothing compared to Izuku. Nothing she could ever do or say would ever measure up to his son and he was going to make the abundantly clear.

 

She pressed start on the dishwasher and turned around. “About what?”

 

“I don’t want Bakugo Katsuki anywhere near Izuku anymore. Not after today.”

 

“That’s ridiculous, Hisashi. Katsuki is Izuku’s best friend. You don’t want Izuku to be around his best friend?”

 

“Inko you need to stop projecting your relationship with Mitsuki onto those boys. It is doing no one any favors least of all our son who should be your first priority. Izuku is continuously getting hurt because of him. I don’t know how many times I’ve come home to him covered in band aids because of something that is completely fixable. Did you even talk to Mitsuki about her brat’s atrocious behavior? Has she even tried stopping that shit?”

 

“No, I didn’t bring it up to Mitsuki because children roughhouse and there is no need to bother her with something that’s not a big deal. They’re kids right now. Let them have fun, Hisashi.”

 

“Izuku wasn’t having much fun when he came stumbling home today. He was covered in cuts and bruises and he had so much dirt in his eyes he could barely see. That Bakugo brat was certainly not helping him home after the mess he made. I don’t want Katsuki near him again. What if something had happened? What if some fucking pedophile or human trafficker or some other sick and disgusting human saw him like that and figured it was prime opportunity to grab someone who couldn’t fight back? Anything could have happened today and you are more concerned with projecting your perfect little fantasy of your kids being best friends just like you and Mitsuki without even considering my son’s safety!”

 

“Hisashi, you need to calm down right now. You’re completely overreacting and I do not appreciate you yelling at me. Izuku is fine. He was happy and talking a mile a minute at dinner like always. Whatever happened between them the boys will make up and be attached to each other’s hips again in a few days.”

 

Hisashi clenched his fists as he glared at the woman in front of him. He really didn’t want to have to do this. Izuku was going to be so heartbroken. It was okay though. He was still young and he would learn to live without her. Hell, with how young he is he likely won’t even remember her by the time he hits fifteen.

 

 

The funeral was a quiet and somber affair. Everyone mourned the lovely woman who went out in the middle of the night to pick up a special gift for her precious son only to be killed in a tragic villain attack. Everyone mourned except Hisashi who simply held onto his sobbing son the entire time. He had nothing to mourn because he wasn’t going to let anyone get in the way of protecting his son.

 

Gray eyes met red. Red that belonged to the Bakugo brat. He wasn’t quite done yet. There was still one more thing in the way of Izuku’s safety. He was sure that Mitsuki would insist on staying in Izuku’s life and he couldn’t have that.

 

 

It was far too easy. A stray villain with a gigantification quirk fell on top of the Bakugo household and before any heroes could do anything the villain was whisked away along with the bodies of those inside. Gigantomachia was given some well deserved praise and the heroes were left assuming the family inside the house were reduced to nothing but the bloodstains still soaking what was left of the floor.

 

The Bakugo brat hadn’t manifested his quirk yet but with some close inspection Hisashi found that he would have had a nice combination of his parent’s quirks. It was just barely on the brink of manifestation but it wasn’t quite there yet, still resting just under the surface. It wasn’t something Hisashi himself was interested in but combined with a few other quirks? It could be excellent.

 

Then he got to thinking about Izuku. He was going to need a bodyguard and possibly a friend after everything that happened recently. The brat hadn’t been a good friend in his first life but he was sure he could give the doctor a few specific parameters- if he wasn’t mistaken they had picked up a dog with a quirk not long ago, that would be the perfect base. The Nomu project needed some more subjects anyway.

 

 

It had taken a year of work but the doctor had managed to get it done in record time- at least compared to the more intensive projects. The Nomu looked like a normal dog. Well, as normal as something that looked like it stepped straight out of hell could look. No one would suspect that he was Bakugo Katsuki 2.0. He obeyed every command and had a beautiful array of quirks that would be perfect in protecting Izuku from a variety of problems that could crop up. 

 

So he gave specific priority commands that the Nomu was to always follow and took a trip to the nearest pet store. Before long he was leaving with a shimmering green bow attached to the collar that had a beautifully engraved ‘Katsudon’ on the tag- the horrified reactions of the employees of the store was a gift in and of itself. He was sure Izuku would be ecstatic. After all, animals with quirks were a rare find.

 

And it wasn’t all that tragic. The good Doctor had to use parts from his parents to complete the Nomu so they were all together again just like a happy family should be. And people called him needlessly cruel.

 

 

It was perfect. He had taken care of just about every single thing that could possibly come between him and his son. Izuku was no longer going to public school, homeschooling was a much safer option for him and he had Katsudon to keep a careful eye on him whenever they played outside- he was so tempted to simply lock him away from the world but he was going to hold off on that for now. He wasn’t one to repeat actions that had proven they didn’t work out very well.

 

Everything was perfect and peaceful and wonderful. Until it wasn’t. Of course he probably should have suspected that the blonde pest would eventually catch up with him. He just didn’t expect it to happen so soon. He wouldn’t be caught off guard again. He couldn’t afford to be caught off guard again. He’d lost far too much in that fight.

 

The moment he heard that hero coming he had Izuku whisked away to the vault- he may not repeat past mistakes but perhaps he was a bit sentimental, besides the vault was the most secure place in his hideout. He never expected for the entire building to be leveled. He never expected to have his skull nearly crushed to oblivion. He certainly hadn’t expected to find out that the constant thorn in his side stole his precious son and was keeping him locked away in that awful gaudy tower.

 

But it was alright. It was only a matter of time before all of his plans came into fruition. It was only a matter of time before his precious son was in his arms again.

 

But this time he would never let go.

Chapter 2: Blossoming Under the Right Conditions

Notes:

(See the end of the chapter for notes.)

Chapter Text

Toshinori felt sick when he saw it. He wasn’t sure whether or not he was seeing things at first- he was still riding a serious adrenaline high, that tends to happen when you smash your nemesis' face in. But that silvery glint became unmistakeable the closer and closer he got- a bank vault. He’d seen vaults before but nothing like this. This belonged in some kind of bank with insane security measures- one only the richest people in the world did business with.

 

One For All came with a lot of stories. Each one passed down from holder to holder. While he hadn’t had much time with Nana he could still remember each and every story she told him. Stories she had heard from her master and so on and so forth. One of the most horrific and memorable ones involved the first holder of One For All and a bank vault.

 

That tale echoed through his head as he picked up the pace until he came to a dead stop in front of the offending piece of metal. He hesitated as he stared at it for a moment. There was a deep seated feeling of dread that he couldn’t shake and only seemed to grow stronger and stronger. 

 

For a brief moment he wondered if it was really him that was feeling it- his master once talked about the strangeness that seemed to surround the quirk. She said once that she never quite felt alone once she had received it, a sentiment that Toshinori himself shared once she passed it on to him.

 

He took a deep shuddering breath and summoned his quirk once again. Blowing the door off its hinges wasn’t an option as he didn’t know what- or who- was inside so he would have to settle for pulling the damn thing apart piece by piece if he had to.

 

He tossed chunk after chunk of steel to the side until there was nothing left of the door. Dust slowly settled and he squinted as he stared into the vault that was shrouded in darkness. His eyes almost missed the tiny form curled up in the corner between the bed and nightstand. He’d blame adrenaline again for that. No need to think about how much blood he’s lost by this point.

 

“Hello,” he called, keeping his voice soft and reassuring. “Are you alright?”

 

“All Might,” a nervous, childlike voice questioned. The tiny lump scooted forward and got to their feet before practically launching at Toshinori only to come to a screeching halt about a foot away.

 

Toshinori was met with a little boy who had thick green curls and vibrant green eyes. Freckles were scattered across his cheeks contorting with his face as his surprised expression melted into horror. Unfortunately, he wasn’t sure he had much time to console a traumatized child and make it to an ambulance before he collapsed so he stepped forward and scooped the child up in a single motion. “Come on, let’s get you out of here, kiddo.”

 

“Wait, you’re hurt! Katsudon can help,” the boy cried before looking over his shoulder.” Katsudon!”

 

A streak of black and pale blonde zoomed out of the vault coming to a stop by Toshinori’s side. It somewhat resembled a dog- a dog that looked like it stepped out of some kind of horror movie about hellhounds- and it came up to his waist which was pretty impressive considering he was over seven foot tall.

 

Now with a giant hellhound at his side managing to support some of his weight he marched through the ruins of All For One’s hideout. Before long he came across Nighteye and Gran who quickly whisked the child away and shoved Toshinori into the nearest ambulance. 

 

As his vision slowly faded in and out he couldn’t get his mind off those brilliant green eyes. A small part of him- that he wasn’t totally sure was him- seemed to break a little bit.

 

 

Raising a child was difficult. There was absolutely no doubt about that. But raising a heavily traumatized child was even more so. He had never been so glad to have Gran in his life before now because there was no way he would have been able to raise Izuku alone.

 

He hadn’t even intended to adopt Izuku. He thought that he would make sure the kid had a good loving family that wasn’t going to exacerbate his issues and maybe check in on him from time to time to see how he was doing. But Gran played dirty and made it abundantly clear in a single afternoon that there was no other option and he had no real choice in the matter- not that he was upset about it in the end. 

 

Toshinori swung his legs off the side of his hospital bed, fully intending to get back to work. He may not be able to patrol like he used to but he can at least take some of the load off of Mirai’s shoulders for a bit. His feet hadn’t even touched the ground when the door opened and in strolled Gran.

 

“What the hell do you think you’re doing,” Gran barked at him. He should have known something was off with the old man- he had this mischievous glint in his eyes- but he was still too out of it to notice such details.

 

“Gotta get back to work sometime,” he replied.

 

“Yes, you do. Which is why you’re going to stay in that bed.”

 

“Staying here is the exact opposite of getting back to work.”

 

“Not when your new job needs company.”

 

He froze, face scrunching up in confusion. “What are you talking about?”

 

“Well, someone has to look after the kid until arrangements can be made. You have been volunteered for the job. You’re not gonna break the kid's heart and go back on that, are you?” Gran stepped to the side revealing Izuku standing there clutching an All Might plushie like his life depended on it. The hellhound- Katsudon, he thought he remembered Izuku calling it- stood behind him looking very intimidating- almost giving off a menacing aura as if daring him to send the boy away.

 

“It’s okay,” Izuku whispered, not hiding his disappointment very well. “I’m used to it being just me and Katsudon.” 

 

Huge green eyes pierced Toshinori’s soul and his heart rate skyrocketed when the tears started coming. 

 

Before he knew it he was back on the hospital bed. This time with a kid curled up against his good side as they watched cartoons together.

 

When the DNA test came back matching the blood that was on his hands from All For One as Izuku’s parent any doubt about what he was going to do next had vanished. It was too much of a risk to send Izuku to a civilian family. All For One had many allies and enemies and there was a chance they would all like to get their hands on his son. It was either find a family of heroes willing to take on that responsibility or take it on himself. The answer was obvious.

 

He had officially taken a solid year off from hero work. He never thought he’d see the day where that happened, especially considering “it was like pulling teeth to get him to take a single day off”. At least according to literally everyone in Might Tower. They seemed to be enjoying the break at the very least.

 

His year off had brought to light quite a few issues. Namely, he had been carrying far too much as a hero. He had spent decades being constantly active. Patrolling. Taking cases. Raids. Becoming a symbol was something he had always strived for but he came to realize quickly that most others did not share in his insane work ethic. Heroes all around Japan had to step up and they weren’t ready for it. There were many that resigned, either they were unwilling to put in the effort or by cracking under the sudden pressure.

 

His announcement of his break was not taken well originally, but after some quick words from Mirai the majority of the people seemed to come to the understanding that he wasn’t going to be around forever and he was just as human as everyone else. In order for society to thrive more people needed to do their part as members of said society.

 

Meanwhile, he spent the year recovering and trying to instill some healthy habits in his kid who practically absorbed everything he did and said. That meant that there was no room for overdoing it. Giving Izuku any more bad habits was off the table. Thankfully, he had Gran to help out when he shouldn’t be doing certain things. He wished he could say the same about Mirai but the man was so leery of Izuku that it was better that they not be in the same room and Izuku’s therapist agreed with his decision when he informed her.

 

Healing was a long process for the both of them but by the time it was time for Toshinori to be All Might again he felt they were well on their way to a good future.

 

“Are you sure you’ll be alright while I’m gone,” he asked. He couldn’t believe he was reluctant to go back to hero work. The moment he was officially cleared to go back to work had long since passed but he put off returning so he could stay with Izuku longer. He had only spent a year like this but he had grown so used to their routine that returning to work was going to be a major adjustment.

 

“I’ll be fine, dad. Don’t worry. Gran is going to take me to school and pick me up and we’re going to have dinner ready by the time you get home. Just like we talked about,” Izuku said with fond exasperation. He had just turned eleven and was in his final year of elementary school. He was every bit as kind and thoughtful as he had been that first day they met, if not more so. “Besides, you know as well as I do that Katsudon isn’t going to let anything happen to me.”

 

That was a fair point. Katsudon downright refused to leave Izuku’s side and had nearly taken off the hand of a kid who tried to fight with him. Trying to keep him at home while Izuku was away was impossible so certain measures had to be taken to ensure that no one would get in trouble for the hellhound’s constant presence in his son’s life. “Right, of course. Of course.” He sighed as he stared down at his boy. His son. “I’ll see you tonight. Be good at school and let me know if they’re keeping those bullies in line. Katsudon shouldn’t have to do all the work in that department.”

 

“I will. Promise. I love you dad.”

 

“I love you too.” Unable to help himself, he threw his arms around Izuku in a tight hug and gave him one last goodbye before he was off.

 

He’d been thinking more and more about the future. He couldn’t be a hero forever, that became very apparent. He was going to have to pass on his quirk eventually and the answer was always lingering just in the back of his mind. Mirai wasn’t going to be happy when he broke the news but there was no one who would be more suited to it so his sidekick would just have to get over it.

 

 

Toshinori settled into the chair he was given in the viewing room. Nedzu had been very kind and offered to let him watch both the Recommendation Exams as well as the General Entrance Exams. He had been looking forward to it for weeks, though if anyone asked his excitement was purely to see the new crop of hero students and not because his son was taking the Recommendation Exam this year. Who was he kidding? He was absolutely going to be cheering Izuku on. It’s not like he was a judge; he could afford to play favorites until he actually started teaching.

 

“Did that kid really bring his dog to the exams,” Snipe asked, motioning to the left side of the monitor where Izuku was standing with Katsudon. The other examinees were strategically avoiding the two- minus the Todoroki boy who either looked like he was restraining himself from asking a million questions or he was just constipated.

 

“Dude, I don’t think that thing can qualify as a dog,” Present Mic said slowly. “It looks like it could eat the listener in a couple bites…”

 

“Nonsense, Katsudon is very protective of Izuku,” Toshinori assured. Somehow he didn’t think that his words soothed their worries much.

 

“It’s name is Katsudon,” Present Mic stared at the dog in disbelief, a hand coming up to cover his mouth.

 

“Okay, but why is the dog here ,” Eraserhead snapped.

 

“Oh, well. You see, Katsudon doesn’t take well to being separated from Izuku for long periods of time. There are some… rather horrific details that I can’t quite get into about his origins but when Izuku started going to elementary school again Katsudon broke through several reinforced doors and nearly took off someone’s arm when one of the teacher’s tried to separate them,” Toshinori explained with what he was sure was probably a painful looking smile. “So we came to the conclusion that it was probably best to just let him accompany Izuku. As long as he’s in sight Katsudon behaves like a perfect gentleman and listens to whatever Izuku tells him.”

 

The silence that settled over the room for the next few minutes was awkward at best. Thankfully, Nedzu went ahead and started the exam. Toshinori leaned forward slightly in his seat, never once taking his eyes off his boy even as he shot through the obstacle course leaving the other competitors in a state of shock for a few moments. He was doing so well with One For All.

 

The silence that enveloped the viewing area held an air of disbelief but Toshinori couldn’t be prouder.

 

“Dibs,” Vlad King said as soon as he shook himself out of the stupor.

 

“Vetoed!” Nedzu grinned as he took a sip of his tea.

 

“Fuck,” Aizawa whispered under his breath, though it could be heard just as well in the silent room.

Notes:

Aizawa's about to have a rough year