Sonic Prime X My Hero Academia: Stronger together

Time chamber part 1: The Saiyan within!

As Midoriya walks out into the room, he slowly finds it harder to breath, "Be careful Deku, the further you go out there, the harder it gets to breath, gives you greater stamina" Sonic says, Midoriya walks back over to Sonic, feeling the air getting easier to breath, "So, what are we doing first?" Midoriya asks, "You, are going to be out here to increase your lung capacity, the air gets hotter and harder to breath, which will make your stamina go up the further you go out, but don't go to far, it gets pretty foggy out there" Sonic says, Midoriya nods before walking out till he feels the effects of the room on his lungs, before sitting down to make things a bit easier, while Sonic watches from the room's only building, "Once your stamina is built up on, we can focus on your training, your saiyan cells are going to kick in soon so you will get stronger much faster, so be ready for the sparing, cause thats gonna be where you struggle" Sonic says, punching his fist into his palm, causing a gust of wind to shoot out from him, Midoriya shivers, 'This is gonna be a long year...'

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(7:55 PM, 1-A Dorms.)

Everyone is gathered in the common room, some were watching TV, some were in the kitchen, while everyone else is talking, that was until Aizawa turns up, "Where is Sonic and Midoriya?" Aizawa asks, everyone looks amongst themselves, all very unwilling to answer, "Midoriya's training with Sonic in the time chamber, they entered two hours ago" Yaoyorozu answers, "Wait he went through with it!?" Aizawa exclaims, everyone nods in unison, Aizawa asks if the door was still around, hoping to follow them, but Tsu shuts down the idea saying it disappeared in front of them when it closed, "Darn, well, i just hope Midoriya's ready for what he's in for" Aizawa says.

The class ask what he means before explaining that he finally found out who Sonic was, "Sonic's not human, he's a triple hybrid, consisting of 25% hedgehog, 25% wolf, and 50% saiyan, making him very dangerous, due to his ability to adapt to his opponents, but what is most worrying is what is coating his skeleton..." Aizawa says, "What do you mean? He never told us about this..." Iida says, "He didn't want you to know to keep you safe, cause the metal on his body doesn't exist on earth! Heck, its not even a metal known to man kind!" Aizawa says, everyone looks shocked, "What does it do?" Tokoyami asks, "Well, if the person survives the procedure, then from what we can tell, the metal seems to make Sonic completely vibration absorbent, even if he can feel the pain, his arms just won't move, which, combined with the Hyper-accelerated healing that comes with that, it basically makes him immortal and indestructible" Aizawa finishes, some are speechless, while others are in disbelief.

"That explains why he was able to tank those hits from that Nomu back at the USJ incident, and it also explains how he regenerated so fast during the battle" Kirishima says, his arms crossed, "But that doesn't explain his transformations..." Mina says, "I think we should let him answer that, it wouldn't be right to make assumptions" Aizawa says, everyone nods in agreement, "I don't know what you extra's are doing up so late, but go to bed already!" Bakugo screams, gaining a death stare from virtually everyone in the room, "Can you not be so self centered!?" Yaoyorozu yells, letting her rage finally boil over, everyone is left in a state of shock, they hadn't heard Yaoyorozu yell or get angry. Ever! "Why don't you care!? Sonic could be going through some severe mental trauma, yet all you care about is yourself, and i know you have known Midoriya from child hood, but at least show that you care about one of his closest friends!" Yaoyorozu screams before leaving the room, the rest of the girls, minus Ochaco, and Todoroki to follow her, Bakugo stood there in shock, most of it being that the Yaoyorozu had snapped, and didn't want to induce more of her hidden rage, so he headed back to his dorm, just wanting to sleep this all away.

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Sonic dodges attack after attack, Midoriya had moved at least 12 meters away from the building in the room, his lungs had gotten stronger and he was now attempting to land a hit on his friend, but was failing miserably, Sonic was just too fast, and he wasn't blocking, which made it worse, "Just. Stay. Still!" Midoriya says, missing a right hook, "C'mon, if i was to take it easy on you, then it wouldn't be training, and not just that, I'm training you by dodging, haven't you realized you've gotten faster?" Sonic asks, before blocking a barrage of punches, this rose Midoriya's moral a bit higher, even if it wasn't a solid punch, he had finally got a few hits in, although they were blocked, he had still made contact, "Ok, lets take a break for a bit, then get back to it" Sonic says, they walk back to the room and enter the kitchen, Sonic walks over to the fridge, seeing if there was anything they could use, the room had an infinite source of food, so it wasn't hard to get a couple of pork pies and a couple of ham sandwiches from it, "here ya go" Sonic says, throwing one of the pork pies to Midoriya, he looks at it with confusion before looking over at Sonic who had already taken a bite out of his.

"So, when do i learn to go super saiyan?" Midoriya asks, taking a bit out of the Pork pie in his hand,  Sonic looks over at him, "Not until your power is high enough and your mind can handle the power, the energy output from the form is intense, so your not ready to handle it right away, which is why your gonna have to master ki control multiple times to keep it in check" Sonic says, going on to explain that although Midoriya's courage was admirable, it also put him at risk, "You need to think with your head and your heart, not one of the two, otherwise your heart is following what has to be done, while your head is following what can't be done, you following?" Sonic says, Midoriya nods, when they went back out, Sonic decided that he would actually try and started to fight back, they eventually decide to just continue sparing, which was rapidly increasing his durability, reaction time, speed, strength and stamina, "I already feel stronger!" Midoriya says, countering a left hook from Sonic with an arm block, going in for an elbow strike that was caught by his opponent, "Yeah, this place will do that to ya!" Sonic says before landing a jab to his jaw, sending him a few feet back, "Now come at me with everything you've got!!!" Sonic exclaims, powering up, "You bet!" Midoriya replies.

A few hours later, Sonic was busy meditating while Midoriya was a bit further out, training on a punching bag, Sonic had used ki to make it float so it was basically perfect for him, finishing his meditation, Sonic walks over to Midoriya, who stops his onslaught on the punching bag to turn his attention on his friend, "Oh, hey Sonic! What's up?" he asks, "I think its time we got serious with this, your body has trained enough to my calculations to handle at least 1% of my full power, but your gonna need to give it everything you've got, 1% is what i use for everything, and you know how strong i am" Sonic says, getting into a fighting guard, "I know, so i won't hold anything back!" Midoriya exclaims, before charging at him, sliding into a backward sweep kick, Sonic somersaults over his attack before running at him, Sonic crouches, landing an elbow strike to Midoriya's left side before following it up with an uppercut to the jaw, finishing the combo with a backward roundhouse kick, leaving him to slide a few meters back, "Can you keep going?" Sonic asks, he didn't want to push him too far, "Yeah, lets keep this up! I want to grow strong like you!" Deku asks, flashing a smile, Sonic grins before the two leap at eachother, fists colliding, sparring into the night.

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This is getting fun to write, but i gotta wrap it up quick as I'm making this on the last days of Easter holiday's 2021 XD