Izuku's mother died in labor causing his father to blame him for the cause of her death. Izuku was treated very poorly by his father. His father adopted another son after the boy tried to pickpocket him, Tomura. Years later Izuku would end up doing all the housework even though his father had the money to hire other workers. His father and stepbrother would start to call him Deku to make him feel useless. Izuku, however, did have his safe space, the woods outback. He would run in there multiple times when he finished his morning chores to sketch the beautiful sights. One day the morning chores were especially tiring. He started to draw from under a tree but soon fell into a nap. He woke up to find a stranger standing next to him looking through his book, and began a conversation:
K- sorry to look without permission but these are really good.
I- it’s fine, but may I ask who you are?
K-*laughing* you don't know!
I-*shakes head slowly*
K- of well my name's Katsuki.
I- I'm Izuku.
K- may I ask why you are out here alone?
I- just to get a break from work, aren't you here to get away from the palace?
K-*shocked* what makes you think I was at the palace??!
I- sorry, it's just your clothing I assumed you worked there.
K- oh…..well...I do…...work there
I- must be interesting.
K- where do you work?
I- just in the manner in the direction*pointing from where he came*
K- oh, the Midoriya house.
I- yeah, you heard of them.
K- the prince gets a lot of letters about how eligible their son Tomura is. Do you know anything about him?
I- he's a spoiled brat with no sense of how a person should be treated, fairly decent looks but only after two and a half hours of putting his make-up on and getting his hair done.
K- that sounds right, I knew those letters were off.
Izuku wanted to know the time and Katsuki pulled out a pocket watch. Izuku jumped up, it was a few minutes past when he should have been back. He started to apologize and was going to run but Katuski stopped him. He asked if he could see him again to which Izuku said yes but right now he needed to go. Katsuki watched as Izuku left to hear a certain red-head behind him.
Ki- well who was that Your Majesty?
Ka- none of your business Kirishima!
Ki- well your safety is my business, so who was it?
Ka- just someone that works at the Midoriya House.
Ki- and allowed to call you by your first, they must be special?
Ka- no there not, but I couldn't let a stranger know I was the prince! Anyway, why are you here?
Ki- oh yeah, they found out you were missing and sent me to go get you.
Ka- fine let's head back.
Meanwhile, Izuku had just arrived at the manner to see Tomura waiting for him in the kitchen. He mocked him and left Izuku to start dinner. He was able to complete it in time and brought it to his father and stepbrother.
For the next few months, Izuku and Katuski would have small meetups, maybe once a week. One day in the morning after breakfast Izuku dropped a plate causing it to smash, his father got very angry and hit his arm with his belt. That same day Izuku saw Katuski, he noticed his arms shaking and asked but when Izuku brushed it off he moved his sleeve to reveal a large injury. Katsuki was shocked and forced Izuku to explain that Mr. Midoriya would do things like this when he messed up. They started seeing each other less and less when the ball to get Katsuki a marriage came along. Katsuki was able to persuade his mother to invite the local people as well as the nobles. Izuku was excited. But when the night of the ball came his father hurt him along with Tomura ripping his clothes. He cried in the back garden, then a skinny man turned up to see if he could be helped. Izuku helped the man for it to be revealed that he was a sorcerer looking to help those that were pure-hearted. The man helped Izuku with his clothes and transportation to the ball. Izuku got inside the ball but he missed the announcements so he had to go through a side entrance. Kirishima spotted him and went up to him to talk:
Ki- are you by any chance Izuku?
I- yes, how do you know that?
Ki- katsuki talks about you a lot.
I- oh, do you know where I might find him?
Ki- if you go out to the gardens, I'll go get him for you.
I- why would you help me?
Ki- he's only happy around you.
Izuku left for the gardens while Kirishima went to help Katuski get away from Tomura's horrible dancing. Katsuki was grateful but confused until Kirishima explained who was outside. He left with Kirishima covering for him and went outside to see Izuku waiting.
I- well I hope I'm not interrupting your majesty*cockily*
K- it's the clothes isn't it
I- a little
K- well my turn, why is a simple worker wearing such expensive clothing?
I- well I might have borrowed some of my stepbrother’s clothes.*lying*
K- *confused* stepbrother?
I- whoops
K- now that sounds interesting. So I'm not the only one hiding information.
I- Tomura was adopted by my father after my mother died in labor with me, meaning he blames and hates me.
K- that explains it and now for another question, why don't you leave?
I- the house was on my mother's side and I have a feeling she wouldn't want a man like that to be in full control of it.
For the rest of the evening Izuku and Katsuki enjoyed each other until Izuku realized the time and that soon his father would be leaving. He tried to get away, Katuski tried to grab his wrist but only ripped the button of his cuff off, allowing him to get away. He quickly ran to his coach in order to make it home. He thought he made it before his father but when he entered he saw his father waiting for him.
F- what is this *holding a drawing Izuku did of Katsuki he did a while ago*.
I- just a drawing
F- that happens to be the spitting image of the prince, who you have never seen.
Izuku didn't need to explain because his father already knew and had apparently seen them together at the ball. He started to reveal his plan of getting Tomura married to a rich lord, allowing Izuku to have Katsuki and for his father to be in charge of 'that boy' and finished with "that way we both get what we want.'' Izuku had had enough of his father and started to rebel against his father by saying "no, he's not just a boy. He's nice, smart and cares far more about this kingdom than you. I'll never let you near him". His father responded with "the wrong answer" and proceeded to rip up the drawing, but Izuku didn't care if it was just a drawing. Then he started to walk towards Izuku which did scare him. His father proceeded to punch Izuku in the face hard enough to send them to the floor, then Izuku got kicked in the stomach. He was dragged to a wall and one of his wrists was chained up, this was common when his father wanted to make sure he wasn't seen when guests came over, and then his door was locked. The next day Izuku heard the unexpected sound of horses, this confused Izuku until he heard Kirishima's voice to realize that they were looking for him. Izuku found some strength within him and started tugging to no use. He saw the screws and started looking for something to unscrew them. He found a thin button and it worked. The chain came off the wall but stayed around his wrist. He started ramming into his locked door, which didn't take long seeing how rotten the wood was. He started to run down the stairs and through the halls to find Kirishima. He eventually found them and overheard a small portion of their conversation:
Ki- I'm sorry but that answer was incorrect.
F- it doesn't matter, my son is the best fit for the prince.
I- sorry to intrude but--
Ki- Izuku good to see you again.
F- what are you doing out?!!
Ki- he's here for the question, am I wrong?
I- no, go ahead.
Ki- what did the Prince's lover leave behind?
I- a button from the wrist cuff *rises his wrist without a chain to show the missing button*.
Ki- would you mind following me.
Before Izuku could get going his father had grabbed the chain stopping him and hurting him from trying to pull the chain. He started shouting about not approving of such actions. Kirishima was about to pull out his sword for intimation but Izuku beat him to it with his words. "It doesn't matter what you think, you have no control of me". His father was shocked and only responded with "but I'm your father". Izuku quickly responded with "you never were and never will be my father". Everyone's shock was washed away when Katsuki made his presence known "about time." Katsuki demanded that Izuku's father remove the chain and to never come near him again. Tomura did it for the father out of fear. Izuku and Katsuki went outside, shared a kiss and headed to the castle for Izuku to meet the Queen and to prepare for the wedding.
Epilogue - Izuku and Katsuki step outside of a carriage to see the manner looking as good as it used to. Katsuki was impressed but confused at how it looked so good. Izuku explained by pointing at his friend Uraraka who Izuku gave permission to live there and take care of it for him.