Disclaimer: Of course I don't own My Hero Academia, its characters, or the franchise.
Story: If there was a Hell, he knew he had a place in it after everything. And he had to have somehow gotten into it already –the hell else is he in a girl's body?! Either he had somehow swapped places with Izuku Midoriya or she was still somehow coinhabiting the same body. Either way, her dad creeps him out and might be a supervillain…
Set sometime after All Might's retirement, but before Endeavor is officially named Number One.
Spoilers: Psh. All over you. I'm probably sure I keep spoiling things without noticing.
Warnings: Age disparity, genderbending/gender swap/body swap.
Pairings: Eventual Izuku/Endeavor

Miles in Your Mind
Chapter One: A Father's Intuition (Or Not)

He groaned, feeling sore as he woke up. Rubbing a hand against his face, he paused and realized something was wrong. His hand felt softer and smaller, and his face felt thinner and missing its usual scruff. He took his hand away and his eyes widened at the sight of a feminine hand.

"What?!"

His voice! It was too high and girly to be his. He looked down then and almost screeched. He had breasts.

They were, admittedly, nice and plump, but he was a man and didn't have breasts in the first place.

There was knocking on the door to this unfamiliar room.

"Sweetie, are you okay?"

"Just fine!" he screamed out, trying to prolong meeting anyone like this.

"Okay, your father's making breakfast, Izuku."

Izuku? Who was…Wait a second. Shoto's friend? The one who challenged him in the hallway, at the Sports Festival.

"I'll be out in a minute," he called out, much more calmer.

This was a strange situation, but he was understanding some things already, even if he didn't have the whole picture. He still had to remain calm however. He stood from the bed and looked around, grimacing at the amount of All Might merchandise around.

"Shit, this place is a nightmare," he mumbled.

So he was somehow stuck in a teenage girl's body. Alright. He could pull through this. He looked down though, glancing at his new, sizable breasts. He hesitantly poked at one. It was…much different touching them when they were apart of him.

"Breakfast," he focused on, taking his mind off of his new body. 'It's fucking weird…'

He left the room to meet Midoriya's parents, seeing the pretty plump woman at the table, while there was a man with ash blond hair by the stove and looking busy cooking.

"Oh, you're not dressed, Izuku. Usually, you're up and ready before any of us," Midoriya —Izuku's mother said. Hell, it was easier to just go with Izuku…

"I had a late start," he said quietly, focusing on keeping calm and vague enough so he could pass himself off as Izuku.

"Good morning, Izuku," the man, most likely her father, said. He was surprised by the English the other spoke in.

"Good morning, Papa," popped out of his mouth, making him mentally blink and be confused. Maybe her body and mind was around enough to help him with natural reactions. He was familiar and could speak English, but it wasn't his natural inclination and he couldn't speak as smoothly or as naturally as it seemed Izuku and her father could.

"I'll be taking you to school today," Izuku's father said.

"Okay…"

Something about the man bothered him and felt familiar. And when the blond turned around, he tried to hide his shiver as the other's violet eyes bore into him. Then the man's eyes narrowed and darkened, as if he knew the 'girl' in front of him wasn't his daughter but Todoroki Enji aka Endeavor, the current interim Number One Hero.

"Have some breakfast, Darling," he said softly, unnerving Enji. "It's quite good."

Somehow, Enji felt like he was being offered poison.

The breakfast had been stiff, but Inko and Hisashi (he was pretty sure that was what they were calling each other) managed fine on conversation on their own. Enji had hurried back to the room, relieved that Izuku seemed to like being prepared and had her uniform already ready on a hanger on a chair. He shoved it on, uncomfortable with the tight fit and his legs showing. She did have nice legs though…

Shaking his head, Enji brushed his teeth and then rushed out with Izuku's backpack. Fuck, he really needed more information —

Izuku's father was suddenly behind him, large hand heavily planting itself around the back of Enji's neck. It was possessive and a little threatening. Hisashi leaned into his ear.

"You're not my daughter. I know her. Who are you?"

Enji didn't remember being terrified before. Confronted by Stain, he'd been initially taken aback and even wary. But terrified? No.

"Papa, I don't know what you're talking about."

Calm. He had to keep calm.

Hisashi scoffed, laughing sinisterly. "Izuku greets me with a bright smile, and a hug and kiss every morning. I'm usually in America after all. And she's known for her smiles. You've barely smiled since you first left her room. Now who. Are. You?" Each word at the end was punctuated by a threatening squeeze around Enji's throat.

Enji found himself gasping. "Endeavor. I'm…I'm Endeavor."

He felt frustrated and angry how quickly and easily he'd given in, but this body was more delicate than what he was used to and he also wasn't going to jeopardize Izuku's body so carelessly, especially to this unknown threat.

He was surprised by Hisashi letting go suddenly. "Good. So I know who and what I'm dealing with," he said pleased. "Now Endeavor, I hope you will take good care of my Izuku's body, do you understand?"

"I do," Enji replied stiffly.

"Wonderful. Remember to smile, Endeavor. You may not like to, but Izuku's smile is important to a lot of people."

He nodded tensely, though a part of him wondered about that. Did she really like to smile so much and did people really want to see her smile?

The car ride was tense and he couldn't relax at all. He was so relieved to see UA that he nearly jumped out of the car before Hisashi could completely stop. He almost started to just walk away when Hisashi called out to him —Izuku.

"Take care, Darling," Hisashi smiled affectionately, even if Enji could still see the lingering threat in the other's eyes.

Enji forced a smile, though he'd rather flip the other man off. "Goodbye, Papa."

Hisashi sent him one last smile full of threats and danger, before the door closed and he drove away.

It's been a while since he'd been to UA and seen the place. There was a lot of additions and improvements since his attendance, and he didn't remember it being this crowded. He also hadn't counted on how…popular Izuku seemed. He could barely fucking walk for a few seconds before being stopped and/or greeted by other students. It wasn't just her age group either. She was popular among the older students as well. He'd nearly tossed the kid named Mirio over his shoulder when the third year had tackled him from behind and had held onto Enji fast before he'd shaken him off.

By the time he reached Class 1-A, his nerves were frayed. He'd sat down at the back, thankfully at a desk that he could tell was hers. There were tiny sketches of Heroes across the top of the desk and he'd even spotted a few of him. They were all in that silly, cutesy style he'd once heard his daughter call 'Chibi' or some shit, though he was nearly tempted to erase the excess of All Might Izuku had drawn. Goddamn it, she really was an All Might fangirl…

There was a loud bang on his desk and Enji glared at whoever caused it. It was that Bakugo kid. The one with the explosive temper and who'd gotten kidnapped…

"What's with that clueless, dumbass look on your face, shitty Deku?"

What the fuck?

"Get the fuck out of my face!" Enji snarled and realized too late that was probably the wrong response and not how Izuku would've responded.

Well, she should. She shouldn't let this asshole talk to her like that. Even when he and Rei had argued, they were both a screaming hot mess and it was the screaming and his reactive Hellflames that were the problem then. And the violence. It was hard to forget the things she'd thrown at him and that he'd slapped her so hard that time…

He swallowed heavily and turned his attention back to the boy in front of him, glaring back at the nonplussed kid. Then Bakugo sneered and was about to lean in, when a red-haired kid rushed over and held Bakugo back, pulling him away from Izuku.

"Sorry, Izuku! He probably had a bad breakfast or something. Come on, Bakugo!"

Enji ignored the surprised looks from the class, only startled and mildly irritated when his hand was softly touched. He looked at the culprit, only to be taken aback and also feeling awkward at seeing his son.

"Are you alright?" Shoto asked quietly.

"I'm fine," Enji awkwardly said. "Just had a bad morning."

He nodded and gave him a small smile. "We can talk about it over lunch," Shoto said and briefly squeezed his hand before sitting up and focusing as Aizawa came in complaining. Now Enji's nerves were alight for another reason.

Class ended too soon for his liking and he debated rushing out of there. He realized that'd be suspicious and resigned himself to walking with his son. They met up at the door and Enji had to surreptitiously let Shoto take the lead, since he had no idea where they were going. To his surprise, they ended up on the roof.

Fuck, did Enji even have a lunch?

"Father made katsudon," Shoto said. "I know it's your favorite."

He handed it over and Enji accepted it, partly out of hunger and partly not knowing what else to do.

"Do you want to share?" Enji asked unsurely.

Shoto held up another container. "He also made soba. I stole most of it, so I'm fine."

That actually made Enji laugh. He had wondered where it had gone last night and why he'd ended up cooking katsudon as well. Well, that and to stop Natsuo from complaining about the missing food.

"You still feeling weird about your dad being around?" Shoto suddenly asked him.

Enji held back his grimace. "Weird about, uh, Papa?" Enji kept his tone even.

Shoto shrugged, opening up his container. "You said it's been weird since he's never around. Most of your life, he's been in America and away from you, and suddenly pops back into your life and around you all the time?"

Shit, he didn't know what to say. He opened his mouth to try to brush it off, only for his mouth to start moving on its own and his voice to speak out without his permission.

"I don't know."

Izuku. It had to be her. Maybe she was still inside her body?

"He's been gone for so long, but we did email and talk on the phone over the years. I do miss him and I'm happy he's here now…but it's strange having him around. And sometimes there's this weird vibe around him?"

So she did get those vibes from Hisashi and the man was also not just like that around Enji. At least he thought so.

"Like I said, I don't know," Izuku laughed uncomfortably. "Speaking of dads though…"

Shoto grimaced. "It's a…trial. It's not easy to…forgive him. Or forget everything he did."

He watched his son clench his hands and his own hand moved to cover one of Shoto's. He never would have done it, so he guessed it was Izuku.

"No one's saying you have to forgive or forget," she started gently. "But it would be nice if you two could reconcile and rebuild a better relationship."

Enji felt all out of sorts. He was in turmoil, guilt and shame and regret about his children plaguing him, while surprise and gratefulness stirred in him over this girl he hadn't known cared so much.

Shoto rubbed the back of his head. "That said, things aren't as tense and strained around the house. After the whole blowup over the Number One rank thing —Thanks for suggesting the celebratory dinner, by the way. It really pleased him and calmed him down a lot. —Father's been much more calmer and approachable, and he's been really introspective these days."

Fuck, this girl…He'd really appreciated the dinner and had actually been really happy that his kids had done it for him, and he'd ended up not so upset over attaining the Number One rank the way he had.

That this Izuku was the one who'd suggested it to Shoto…He didn't know why it mattered so much to her, but he found himself feeling eternally grateful.

"I love you," he blurted out and was mortified.

Aside from the fact Enji didn't do feelings, this was Izuku's body and he'd somehow regained control. Shoto's wide eyes and light blush made it worse.

"What I mean is that…" What was Enji going to say? He didn't know what to say. That had just come out of him and he knew that it wasn't Izuku who'd said it either. He'd just wanted to tell Shoto that…that he…

"It's what I think your father would really like to say to you," Izuku said softly, smiling sweetly at his son. This was her speaking now and he felt relieved that she'd managed to speak up. Was this really her or just an imprint left behind in her body? It was making him wonder what was happening to his body…

But still…

Izuku's voice was soft and sweet, and she made Enji feel like she cared, even if she wasn't talking to him directly.

"I don't know him and I can't speak for him, Shoto, but I want to believe that's what he'd really like to say to you."

And then Shoto looked startled, before he looked back at Enji with a genteel, affectionate look that was very reminiscent of his mother.

A huge part of Enji suddenly just wanted to be back in his own body.

Started 10/31/18 — Completed 11/2/18

A/n: Damn it, I have too many BNHA plot bunnies and not enough time XD Eeeh, oh well. Hope you guys end up enjoying this one as well! Please remember to drop a review~