I Create Reality
For as long as Izuku remembers...she can make her wishes real.
Her mother painstakingly taught her responsibility. At least she can turn it on and off, not permanently on...
...they lied to everyone what her Quirk was. And because Izuku loves sweets, anything she then touches, turns into confections she wants. This was way safer than what her true power is.
And the candified objects are actually edible. Due to how doctors and the law sees it, her candy was in a way, harmless...until she could turn meat into peppermint candy with a touch, leading to conclusion she can turn humans into candy...but she can also undo it, as long as 'what was candified was not broken' much to collective relief. However, if body parts broke, evident by the meat she touched, they can no longer go back to normal and stay a 'broken candy'. It was scary in a twisted way. She can even turn one into other food as long as it's sweet, nutritional content included! Her Quirk was thus registered as 'Sweet Touch'. Everyone wondered where the hell in her family tree did this come from.
Inko was content with that.
Thing is, she had to buy sweets to augment her child's imagination. And Izuku studied them all. Candy, Mints, Caramels, Chocolates, Gummies, Licorice, Lollipops, Marshmallows, Gums, Candy Floss, and Pastries. Even sweet fruits! She cannot make Sour Things simply because 'it's not sweet enough'. And what her mother can't afford, 'she wishes for' by literally stealing them from stores on a thought alone!
In Preschool, when kids asked each other what their Quirks were after a check-up...Izuku turned her desk into desk-shaped Mars Bars...leading to an exasperated teacher giving her a new desk...after eating some of her candified desk. She was popular in the whole preschool as a result, and kids would often give her things they got bored of to turn into candy...and female teachers would ask her to turn their...naughty toys into hard candy in secret and the oblivious preschooler is none-the-wiser.
In Elementary School, she was always the Class Prefect, threatening to turn delinquents into candy if they don't behave. Effectively weaponized by teachers.
However, with her true power, Izuku wishes herself to be the cutest she could be, afforded by her genetics, getting cuter the older she gets. Her eyes are framed with thick, long eyelashes like that of a doll's, and her smiles with pure-white, straight healthy teeth and a smile that's 'not gummy'. Her hair is also perpetually healthy, smooth, glossy and silky to touch.
This made her study human anatomy and poring over medical books as her true power has POTENTIAL in all caps, bolded in red, italicized and underlined.
She once tried her powers on dead animals, dead by roadkill but she could not even if she went all out.
She figured as long as living things are alive, she could do something. Dead? Nothing.
She told her mom that.
'Sweetie, great your power might be, only God can bring back the dead and we're not gods.' her mom would say. 'You can only help the living, but not the dead.'
Hence, Izuku resolved to help the living in her own way. Secretly. But her 'front face power' made her study and train hard in baking as a consequence.
But one day, when she was nine years old, she encountered a despondent blonde man sitting in a park, coughing up blood.
'Mister, you OK?' Izuku would ask him.
'Ahaha...well, somehow...well, as one can get if you're missing a few parts.' the man chuckled in a pained voice. 'You see...I helped finish off a criminal empire...but at a great cost. My internal organs are severely damaged not even Recovery Girl can help me now. My retirement is imminent but who'd be my successor? I have a lot to think about.'
'You're afraid that time is not enough since its possible an ideal successor isn't born yet.' Izuku remarked. 'What's your ideal successor?'
'A Hero who always smiles. Reassures people that everything will be alright as you save them from bad things, and a person who can deliver to that promise that everything will be alright. A hero should never show negative expressions on their faces as they do their jobs because people are counting on them. Its not an easy thing to do. There were times my smiles are fake as I can see how horrifying a situation is...and I barely make it but still, I smile and tell people, 'It's OK!' That's what being a Hero means. For me at least.'
Izuku paused before realizing,
'Ah...that means you're All-Might, aren't you?' the man choked at her and did a double-take. 'I watch TV and not as gullible as most kids my age. You just described yourself onscreen. Your Quirk makes it easy for you to be unidentified as a civilian...who'd suspect a skinny guy to be the famous All-Might, right?'
'Ahahaha...yeah, its easy to live a normal life when not on duty.' All-Might chuckled as he transformed before her before shrinking back. 'My fellow heroes aren't so lucky, stalked everyday by admirers, paparazzi looking for scandals on you, etc. The media will do anything, even bad deeds just to sell an article.'
'Heee...then what if we trade secrets?' Izuku offered. 'I keep your secret, you keep mine?'
'Ehhh sure...but what's your secret?' All-Might asked, blinking.
Izuku touched his stomach area and next thing All-Might knew, his innards were...moving...and his pain is...disappearing?! At absolutely no cost?!
'There. I fixed your insides.' Izuku smiled. 'Buuut you'll have to stand up. Right now.' All-Might stood up as next thing he knew, the bench he was sitting on turned into chocolate! And she's eating it! 'It costs a lot of energy you see, I get hungry if I go massive scale!'
'Y-you have two Quirks?!'
'Nope, just one...I disguise my true power as the power to turn stuff into candy...mom's afraid if my true power gets out, bad guys will be after me.' said Izuku, munching on chocolate. 'So when we registered my Quirk as Sweet Touch, the doctors and the law are none-the-wiser mom and I fooled them for my safety, see?'
'That's understandable...the public doesn't know what my Quirk is either.' said All-Might. 'But I call it One For All.'
'One For All?'
'Yes...it originally started as a Quirk that can be transferred willingly...but this one guy who started it gained a Power-Stocking Quirk, causing it to become a Composite Quirk. As the next generation inherits it, they inherit the strength of their predecessors as a result. And it must be given willingly. So I have...successor issues as you know.'
'Heee...'
'You already have a great burden on yourself. You would have been ideal. I cannot paint a target on you by making you my heir.' said All-Might. 'The least I can do for you is to keep your secret in return for giving me my time back. You still hungry?'
'Yeah, I'm starving! This bench isn't enough or that tree!' Izuku gasped out. 'I turn stuff into candy to eat to compensate!'
'Ahahaha, I'll treat you out to Donburi Bowls!'
(All-Might's eyes soon bulged as she ate fifteen Katsudon and Kaisendon each, wondering if fixing him cost her THAT much energy or is it because of his Quirk?)
Thus, a secret friendship formed between the pair. And All-Might kept his condition a secret, bar to select trusted few...but he never revealed whodunnit out of his promise.
She also became his secret Sidekick, healing him when he can't go to Recovery Girl because her Quirk uses up patient's stamina so her ability was hindered by it and more often that not he comes exhausted for her to fully heal him. She gets paid of course. Through her mom who was stunned someone else knows her daughter's secret. But at least relieved on who knows it.
She was also privy to All For One and the fact he could take Quirks. So she really created Sweet Touch as her Secondary Quirk, and buried her true Quirk deep 'within her' to prevent Quirk Theft.
However, All-Might was her only friend as she distanced herself from kids to prevent 'her true nature' going out she was a very lonely kid.
xxx
Years later...
Izuku grew up a very attractive girl with an enviable shape that she maintains by sheer will alone after mastering human anatomy possibilities and limits, and how to achieve such a body through normal means possible without cheating with a Quirk.
But for all her looks, she was still friendless. On purpose.
But there were times she was jealous of other kids who have actual friends.
So...on the way home...
There was a commotion.
'What's going...'
'BOOM!'
'Nevermind, I know who that is...'
'I hope you do kid! A sludge villain got this boy and he's fighting NOT to get killed!'
'WHAT?!' Izuku forced her way through and the other Heroes were unable to do a thing.
'Bakugo!' Izuku yelled. 'I got a plan! Use your strongest explosions on that guy! Go Plus Ultra, he can't die anyway, he's just sludge!'
'M-Midoriya?!' Bakugo spluttered, seeing the class prefect before doing so.
'Just sludge, you say?' the sludge villain spoke in a guttural voice as his victim was going all out. 'What can you do?' Izuku got past the crowd and touched him just as he lunged at her.
'This!'
'Hah! You're toast, fucker!' Bakugo gasped out as Izuku touched the sludge villain...that turned pink and hard!
'W-whaaaa?!' was the general consensus
Bakugo then blew his way out.
'Damn, he nearly drowned me...' he swore. 'Lucky Candygirl's here.'
'As Class Prefect students in our class as my responsibility.' said Izuku. 'Don't hang out in dark alleys, guys like him are always around!' she scolded.
'...girl, what did you do to this guy?' Deathgoro asked her. 'Those of us here are mostly physical, we couldn't do a thing even if we want to.'
'Ah, I turned him into hard candy...my Quirk is Sweet Touch. I can undo it too so do you prefer arresting him as candy or as a sludge?'
'Naaaah, its easier this way so considering circumstances, we'll overlook today.'
'Er, you can't undo if broken, remember?' Bakugo pointed out. 'I blasted my way out.' As much as he hates to admit it, this girl scares him he was just glad she hardly uses her powers unless asked to. But like hell he'll admit it. Besides, she's only scary if she touches you! He still has an advantage on her.
'Nah, he's sludge. He's an exception. Had he had a physical form that'd be another story...though since you blasted him real good, he's enough to fit into a nice glass prison if I undo it.'
(She wound up coming with the heroes to Tartarus just to help put him in prison. Given circumstances, her saving her classmate was classified as 'rescue' since she helped get him out, and did not actively hunt down a villain)
