A hand moved up to stifle a teenager's yawn, his messy hair bouncing as he shook of his tiredness. A quick glance at his watch told him he would soon arrive at his destination.
"Hey Mona, you up?" He nudged his bag, from which the head of a black cat poked out.
"Need something Zuku?" The creature spoke as if a person, yet only the green-haired boy next to him seemed to hear, to everyone else, it appeared as a simple pet.
"Mustafar is next stop and I'm not keen to repeat what happened last time I picked you up when you where sleeping."
"Hey! That wasn't my fault, it's just instinct. Besides, those scratches barely even left a mark!"
"And he says he's not a cat." The teenager, one Izuku Midoriya, mumbled as he snatched his bag from the seat and approached the opening doors of the train, stepping out into the streets he grew up in.
"So this is your home." The cat, Morgana, looked around at the streets of Mustafar, it wasn't a particularly unique city, but the feline could tell it meant a lot to Izuku. "You said you lived with your mother, right? If she's anything like you, try to not drown me with tears, I got enough of that this morning!"
"Hey! I'm not that bad!" The cat simply stared at the boy, something akin to disappointment on his face. At least, as close as a cat could get.
A thump reverberated through a pitch black room. A humanoid form fell to the ground as the hand that suspended it withdrew from its head. The form it was attached to chuckled to himself as red energy followed from his hand to the rest of his body. A black suit hung from his frame, tubes from the machines he sat atop leading into various holes within the outfit. The most prominent of said machines was the respirator attached to the man's horribly scarred face, from which a deep breathing echoed.
The figure hummed in thought, raising his arm to observe the hole within his palm: "A simple mind reading quirk on the surface, and yet, this feels different than the others." The ancient man clenched his fist, the most recent addition to his collection coming to the forefront of his mind.
In an instant, the man found himself not in his warehouse, but instead within a gargantuan coliseum. The sky above was a strange blend of red and black, within the stands sat many figures made of the same colour. He recognised them as the numerous powers he had collected over the years, if that was the case, he supposed this was some kind of place within his mind.
"Not a hard deduction to make, but we've met some who would not be able to comprehend such a thing." A slow clapping emanated from the man who materialised in front of him. His appearance that of the scarred man, but far younger, before his fight with that man.
"And who might you be?" The urban legend spoke, his tone rather hostile to the creature who dared to mock him with his previous form.
"I am you- at least, the true you who comes from within your soul. I suppose at this point I am meant to convince you to embrace your true self, but well, we both know you did that a long while ago." The white haired figure extended his hand: "What do you say Mugen? Your power is great now, but alongside me, the whole world will be your kingdom. And the pathetic resistance formed by our brother will be devoured under our might." After a slight hesitation, the injured man grasped the hand before him, immediately feeling something inside him changing.
The two identical men began to laugh, as they did, the younger one burst into blue flames, reforming into a colossal blue and yellow snake, its enormous form wrapping around the entire arena.
"This power!" The man's laughing increased to maniacal levels: "The power of a God! Come Apophis! Let us take what is rightfully ours!" The demon lord's mad cackling continuing to fill the cognitive plane in which he found himself, only fading when the quirk that had brought him there deactivated.
"Izuku, you've been standing here for 15 minutes." The teen's animal companion was rather worried, Izuku had never been very confident, but seeming him freeze up like this was concerning. Oh well, easy problem to solve.
"Ow!" The boy squeaked as the quadrupedal individual lightly scratched the boy. "Oh right, home..."
"Don't think about it to hard, if she's like you then she's probably incapable of hating you." The cat leaped from the boys bag, slamming a paw against the doorbell. "First try! Mona's still got it!"
Before the boy was able to complain about the feline's actions, the door swung open with incredible force, a woman dashed out and tackled the boy into a hug, releasing rivers from her eyes as she did. Morgana backed away as the mother and son managed to seemingly generate water out of thin air, if he was being honest it was incredible how they were able to survive while expelling so much.
After an extremely long amount of time, Inko dragged Izuku inside, not noticing the black cat slipping inside the door. The long haired women guided the boy to the settee within the living room. A strange silence filled the air, Morgana couldn't quite tell if it was tension or something else, but it didn't seem like a good idea to interrupt.
"I'm not mad at you Izuku." The boy released the slightest sigh of relief, yet his attention stayed focused on his mother's next words: "The Izuku I watched play hero and go on and on about All Might would never do what that man accused you of. Still, you better not have caused Sojiro any trouble, he has enough on his plate as is."
"I-I don't think I caused too much trouble. It was a bit rough at the start but he was super nice after a while." The boy stuttered a bit at the serious tone his mother spoke in, though he couldn't blame her, Sojiro's life certainly wasn't perfect at the start of their time together.
"Good, I knew he'd like you, he always did like your father. Alright, I think that's enough of me worrying about you." The boy's relief was cut short by the next line his mother spoke: "I haven't even teased you about your friends yet!"
"What! How do you even know I made friends!" Inko stared at the boy with an expression that matched the one the cat behind him was giving. "Oh wait. Probation reports..."
"Yep! Though Sojiro never provided any real details. You'll just have to tell me all about them." Morgana saw the slightest bit of stress be removed from the boy's face. Right, Sojiro knew the truth behind their group.
Izuku scrolled through his phone, then handed it to his mother, upon it was a picture of their group standing outside of Café Leblanc, smiles plastered on the teenagers faces.
"The blond haired boy-" Izuku gestured to the boy on the far right: "Is Ryujji Sakamoto. He was a bit of a... trouble maker at the start of the year but he has a good heart, then there's..."
The verdant haired boy continued to list of his friends, though the currently unnoticed feline observer could tell he was getting more nervous as he went on, said nervousness becoming obvious as he went silent when his hand gestured to the last member of the group, a certain auburn haired girl. The now extremely anxious boy's mother raised her eyebrows at the sudden pause.
"Oh. It's like that is it?" The woman teased with a grin on her face, not surprised by the teen's arms flailing in front of his face.
"W-well sort of." Izuku, who's face was now redder than what was likely healthy, finally managed to reply. "T-that's H-Haru Okumura. M-my g-gi-" The boy somehow managed to choke on air: "M-my g-girlfriend."
To say that Morgana had never heard such a loud sound would be the greatest possible understatement. The sound Inko made was certainly positive, though Morgana wasn't quite sure how to describe said noise.
"Oh my baby boy's all grown up!" The mother once again tackled the boy into a hug.
"Mam!" The teen repeatedly tapped his mother on the back: "Can't breath!"
"Hm... Most concerning." A strangely high pitched voice spoke, a white gloved hand reached over a table, picking a card from a stack, and flipping it over: "The Hunger... the bliss of being consumed by power. The joy of dominating others. 200 years since such an Arcana has awoken." He looked around the space he found himself in, while his desk remained intact, and the blue and gold carpet remained beneath his feet, the rest of his domain was wrong.
The walls and ceiling had vanished, leaving a view of the blue void beyond. Through that void, the strange looking man could see patches of darkness appearing before vanishing just as quickly.
"To think a single person would be capable of drawing this many souls from the sea." The old man retrieved another card from the stack, turning it over to reveal a deer skull chained over two figures: "Lavenza, speak with the Trickster." He turned his head to address the child like figure next to him: "It seems his journey is not yet finished."
Authors notes:
I have absolutely no idea how to write, but I decided to try anyway. There's not really many Persona and Mha crossovers out there, and most of them tend to just by short stories, which while great, aren't what some people (including myself) are looking for.
The only other thing of note is that all the persona characters are 1 year younger in this. Otherwise, Haru would be 18 while Izuku is 16 and while I think that's legal in Japan (though I could be wrong) it's something that I imagine would make many people uncomfortable.
If you can't tell, this is the first fic I've written, so I hope it's enjoyable.