I'm a mythology nerd so let's skip the usual beginning stuff and get right to me using my mythological knowledge to write! Shall we? : )

What if Izuku was Hades?

Hades. A name that struck fear into the lives of millions, if not billions of people. Both the souls of his kingdom and the people of Greece. However. Tale's fade and change over time. Allow me to ask you this.

When you hear God of the Underworld what do you think of first?

Satan perhaps? Evil? Death? Thoughts we don't like. 

Now, what if I told you to throw your assumptions out the window? This isn't a story of a villain. It's the story of a God. Oh uh- Forget about the Disney movie too if you watched that, Hades has no relation to fire, thats Hephaestus, Lord of flames and craftsmenship

Me. Izuku Midoriya. Or as I was formerly known, Hades, King of the underworld, first born of the Titan menace Kronos. Former ruler of the world. You'll be reading about me. Enjoy my story, well, the small glimpse you get of it.

UA Entrance Exam

Robots.. That may be a small issue. So be it. He sighed to himself as he began to walk. He was dressed in a semi-formal suit. He raised his hand, barely giving it a flick when suddenly the world itself seemed to split apart as skeletons crawled out. Roman and Greek warriors wielding weapons and speaking their respective languages. The green haired boy smiled and uttered a few simple words

"Destroy the robots for me."(Izuku)

The archers of the groups struck first, arrows littering the false city. You may be wondering how exactly he gained such power. Well simple. He's Hades. Albeit forced into mortal form as a.. Well not quite punishment. Zeus' idea of course. He remembered Poseidon complaining about being a mortal from when he had tried to overthrow Zeus with Hera and the others. So far the worst thing about being a mortal he's discovered is the horrible, rude, depictions of himself. Those damn historians never get things right. Like seriously! Hera was the one trying to kill Heracles not him-! And his name wasn't even Hercules! That's his Roman counterpart. Also people depict Zeus to be far better of a God than he actually is- He supposed those Percy Jackson books didn't paint him.. that bad of a picture- Well at the very least it was more accurate than most things. Despite the fact Poseidon wouldn't know consent if it bit the tip of his trident. He liked that channel on YouTube though.. What was it? Overly Something Something... Anyways- The skeletons rushed through the city, their bones being held together by his sheer force of will as he walked through the city. He noticed the formerly stunned people rushing past him to try and get robots before he got all of them with his skeletal army. The ground had fixed itself.. Poseidon may be a bit mad at that. Usually he's the earthshaker. He chuckled slightly as he walked along the pavement, obeying the law by staying on the sidewalk, his army though.. Not so much. What would happen if he gave a Greek a gun? He mused to himself to amuse himself as he walked.

(Authors Note:Fair warning, I am biased due to my hatred of Hera and Zeus so I may start ranting vicariously through this story... Sorry not sorry.)

For the Gods sake he was bored as he walked. His hands in his pockets with only his thumbs sticking out... Suddenly the earth shook

"Butthurt already Poseidon?"(Izuku)

He muttered jokingly as he assumed said God was mad at him. Perhaps due to the argument they'd been having again recently. Some water themed heroes had died and they were arguing over who had rein over them due to the water based origins and quirks. God how he hated this, he was going to be missing winter AGAIN. Which meant he'd be without her. He sighed. Perhaps he should have bartered more? But he knew she probably wouldn't have wanted to join him like this. Who would voluntarily give up their Godhood, even temporarily. Either way he was definitely getting into this school- Right where was he-? Oh right the earth shaking. He looed around curiously and noticed a giant robot. He sighed and turned to walk until-

"H-HELP!"(???)

He heard someone begging for help. He groaned slightly and turned around. His pace quickening as he flicked his wrist upwards. A sickening cry was heard, as if it were billions of souls all yelling in agony as translucent beings flew out of the formerly sealed crack in the earth, they held the massive robot back for enough time as he pried the rubble off of her

"Let's get you out of here yeah?"(Izuku)

"Thank you!"(???)

"No problem, I'm Izuku Midoriya."(Izuku)

"Ochako Uraraka-"(???)

He noticed her ankle was bruised and possibly broken and cursed. He threw her arm over his shoulder 

"Let's go."(Izuku)

Not for the first time he wished he was the god of anything else. Because being the god of those dead doesn't help. Especially when you can't control the death. That's Thanatos job

"Ow.."(Ochako)

"You'll be fine, they have to have someone here to prevent lawsuits-"(Izuku)

"Oh like someone with a healing quirk?"(Ochako)

"Exactly! But we need to hurry, those shades can't hold off a robot that big, they're just buying us time to get out."(Izuku)

He said as he began to walk as quick as he could whilst knowing she couldn't really use one of her legs. He tried to move quickly as his army of the undead held the robot off until the lights in his eyes went out. Literally. He sighed in relief. He was starting to break a sweat from keeping all those souls here. The earth swallowed the army of shades and skeletons back into the underworld. He sighed in relief, his arm wiping his brow as an old woman walked over to them. Recovery Girl.

"Hello there, this person need's healing!"(Izuku)

"Alright.. And what about you sonny?"(Recovery Girl)

"Oh I'm fine! Just a bit exhausted!"(Izuku)

Godly power tended to be taxing on a mortal body. It's only natural to be exhausted after using said power

"Of course, take some of these then."(Recovery Girl)

She said handing him gummy bears to which he cautiously ate. Remember kids! Always accept candy from strangers!

Timeskip

He had gone back home after the exam and laid back on the couch exhausted and wondering if he had been drugged by an old lady in a lab coat. He sighed as he relaxed. It had been a few days and he was sure he had gotten in but had yet to receive any news. His door bell rung so he got up and answered it. Noticing an envelope on the floor and picked it up 

"To: Izuku Midoriya. From:Principal Nezu."(Izuku)

He read out loud as he opened the envelope. A little projector fell out. It revealed All Might and the boy frowned slightly

"That man is supposed to be dead. Thanatos is slacking off."(Izuku)

He said as he overheard his score

"With a total of 153 Villain points and 10 Hero Points you have been accepted. Welcome, Izuku Midoriya, to your hero academia!"(All Might)

"Great.. Is he going to say what class I'm in or-?"(Izuku)

"Oh right- As a fellow Number One scorer you have received a personal letter from Nezu, recommending you to any other Hero school should you for any reason decide to go elsewhere for your studies! Huh- What was that Shouta? I wouldn't call me incompet- Okay fine- Young Midoriya! You'll be in Class 1-A!"(All Might)

"Thank you, Athena, for having at least one person be smart enough to correct him."(Izuku)

He smiled as he leaned back, how he wished he could indulge himself in his usual pastime, drinking till he can't remember his sorrows or until she comes back for Winter, alas he's currently a minor technically so that's not an option. He sighed. At least there was water he could drink. Usually the only water he had around him were the underworlds rivers... Unless he has to go to a meeting with Poseidon. In which case he usually ends up in an underwater castle for an after party with his brothers.

When the first day had arrived he woke up early and got dressed in the uniform, putting on the tie expertly as he got ready. He walked to the train station and hopped on the first train that went in the direction of UA. He was sitting in a seat checking something on his phone when he noticed someone sit next to him, sparing a glance and then another with wide eyes. A girl seemingly around the age of his current form in the UA Uniform with plant hair. More specifically vines.

"Hello there! I'm Izuku Midoriya, are you going to UA as well?"(Izuku)

The girl looked up surprised before she smiled

"Ah yes, I'm Ibara Shiozaki, I'm going to class 1-B. Nice to meet you Midoriya."(Ibara)

"Thanks! I'm in class 1-A, hope I can see you around though!"(Izuku)

What? Were you expecting him to be shy or nervous? Blushing perhaps? Well he's happily married thank you. Going strong for- Hundreds-? Thousands? Of years, a big number considering y'know, immortality. But something  about this girl reminded him of his wife- Well his wife while he's a god- No, I can tell what at least one of you is thinking but no, he is a faithful man and will not cheat on her, unlike his brothers. He feels bad for Amphitrite and Hera with how much Zeus and Poseidon cheat on them.. Granted he has done his fair share of.. Less than good deeds against people trying to make him or her cheat. In case you were wondering. Persephone is who. Persephone, daughter of Demeter and... Mythical disagreements. Goddess of Spring and Queen of the Underworld. The train stopped and he stood up smiling at her 

"Well this is my stop!"(Izuku)

"Eh? But UA is a couple stops ahead-"(Ibara)

"Yeah but I want the extra walk! Bye!"(Izuku)

"Bye Midoriya!"(Ibara)

He turned and right before the doors closed he heard

"Sorry, I mean Hades-"(???)

And he paused turning back only to see the doors close and Ibara waving bye.. Perhaps he misheard? He had never given out that name to anyone- Well anyone besides his fellow Gods. They of course know who he is... Is she- No, no way. He shook his head and walked out of the platform.