Story Disclaimer/Information

In this story Shadow and Sonic are in the world of My Hero Academia Shadow grows up with the Midoriya while Sonic grows up with the Iida family

The two Hedgehogs will be the same height as Izuku this is just to make the story better and I'm not a fan of them being short

Shadow is the main focus for this story because he's my favorite sega character

The inhibitor rings around Shadow's wrists and ankles restrain his power heavily

[Me] "This is what talking looks like"

{Me} "This is what thinking looks like"

The Super Shadow/Super Sonic form will act like quirks (can be activated whenever the user wants)

Shadow will gain access to the dark form let's say it acts like super saiyan (activated by pure rage)

Dark form appearance: pure white eyes the black parts of his fur are much darker and the red parts are much brighter Shadow is also coated in dark red flames when he uses the dark form

Shadow's quirks: enhanced durability super speed super strength teleportation and One For All

Izuku will possess One For All along with Shadow I know it doesn't seem possible but this is my story and I'm not trying to have it be 100% accurate to the show

Sonic's quirks: enhanced durability super speed and super strength

Amy and Rouge are featured in this story this gives us the the relationship of Sonic and Amy and the relationship of Shadow and Rouge

Rouge and Amy are around the same height as Uraraka

The Story

Inko Midoriya is playing with her new born son when she hears a knock on the door she gets up and opens the door to see a strange little creature with black and red fur and red eyes in a basket

Inko looks closer at the basket and sees the name Shadow The Hedgehog on it

{Inko} "So his name is Shadow,Who left him here?"

Inko looks around and sees nothing her eyes meet the baby boy's

[Inko] "Let's get you inside little guy,Izuku might enjoy having a play mate"

Over the next fifteen years Shadow and Izuku grow up together and consider each other as brothers

Shadow is always trying to make Izuku happy even when they found out that Izuku doesn't have a quirk Shadow is able to make his brother happy

Every year or so a package gets delivered for Shadow it's a pair of White gloves with black and red-tongued cuffs and shoes along with four golden rings there is a note explaining these rings their proper name is inhibitor rings they help Shadow hold his true power back and prevent him from destroying his body one ring goes on each wrist and one goes on each ankle

One day Shadow and Izuku are walking home from school when they are attacked by a sludge villain

Shadow prepares to fight but the number one hero All Might steps in defeats the villain and puts him in two different bottles

All Might jumps away and heads towards a police station Izuku grabs his leg

{Shadow} "Damnit Izuku"

Shadow uses his speed to follow Izuku and All Might this leads him to the roof of a building

[Izuku] "Can I be a hero without a quirk"

[All Might] "No,I'm sorry kid"

Shadow and Izuku see All Might's weakened form

[Shadow] "Can I give a quirk to my brother"

[All Might] "Why do you want to know"

[Shadow] "If I can give Izuku my strength or speed he can make his dream of becoming a hero a reality"

{All Might} "He kept up with me,Maybe he's a worthy successor or perhaps maybe the other one could posses One For All"

All Might leaves

Shadow and Izuku continue to walk home they see the sludge villain that attacked them this time he's got their classmate Katsuki Bakugo

[Izuku] "Shadow we need to help Kacchan"

[Shadow] "Agreed"

The black parts of Shadow's fur shift to golden this is his golden form

Shadow and Izuku rush in to help Bakugo All Might sees this and is impressed he jumps into the fight and defeats he villain

Izuku and Shadow continue to walk home they are stopped by All Might he explains how he got his quirk and wants to give it to the brothers

[Izuku] "Can you even give two people your quirk?"

[All Might] "It's possible if I give you both a percentage like fifty percent each"

[Shadow] "Give Izuku ninety-five percent he needs the quirk more than I do"

Shadow and Izuku return home and over the next ten months they train with All Might getting their bodies prepared for One For All

The day of the U.A entrance exam has come All Might has given the brothers One For All Shadow passes the written part of the exam perfectly Izuku barely passes

Next it's time for a combat test against robots Izuku puts on a tracksuit Shadow puts on his favorite necklace,jacket and a pair of pants

Before the exercise begins the hero Present Mic informs everyone that the largest robot is worth zero points

Shadow and Izuku are approached by two people they are Tenya Iida and a blue hedgehog named Sonic

[Sonic] "Hey you look just like me"

[Shadow] "Beat it blue guy,I've got to focus on the battle ahead"

[Sonic] "Okay sorry to bother you"

The exercise begins Izuku is having issues defeating robots

Shadow and Izuku see a girl named Uraraka she is trapped the massive robot is approaching her

Izuku uses One For All to jump at the robot this breaks his legs Izuku punches the robot breaking his arm in the process

[Uraraka] "He can't land"

Shadow jumps into the air grabs Izuku and then kicks a nearby robot into the ground

[Izuku] "Thanks for the save"

[Shadow] "Mom will kill me for letting you get hurt"

[Izuku] "I saved that girl"

[Shadow] "Yes,yes you did save that girl"

[Uraraka] "My name is Ochako Uraraka"

[Shadow] "Sorry Uraraka,are you okay"

[Uraraka] "Yes thanks to you two"

Shadow and Izuku have passed the exam and are now enrolled in U.A high school

It's the first day of school Shadow and Izuku enter class 1-A

Shadow is approached by Sonic and Tenya Iida

[Sonic] "It's good to see you again"

[Shadow] "Sorry for the way I acted,I just didn't need any distractions"

[Iida] "It was amazing how you two saved that girl"

[Izuku] "I wasn't thinking I just acted,Oh by the way my name is Izuku Midoriya and this is my adopted brother Shadow"

[Iida] "I am Tenya Iida and this is my adopted brother Sonic"

Mr.Aizawa instructs his students to put on some uniforms and to head outside they will be doing a quirk assessment test

[Aizawa] "Alright class 1-A get ready for your quirk assessment test,we will be joined by two support core students Rouge and Amy, they are here to gather information and make equipment"

Shadow looks at Aizawa but then he feels something wrapping around him Rouge has hugged him

[Rouge] "You didn't tell me that you were going to U.A"

[Shadow] "Sorry I was busy training with Izuku"

[Sonic] "I guess that means you two know each other"

[Rouge] "Yeah he's my boyfriend"

[Shadow] "How do you two know each other"

[Rouge] "Sonic is Amy's boyfriend and she's my best friend"

[Shadow] "I see"

The first test is the fifty meter dash

Shadow and Sonic are competing Shadow give Sonic a head start but then teleports and beats Sonic

[Aizawa] "That wasn't running do it again"

The two hedgehogs run again and are equal in speed they line up a third time but before they start running Shadow removes the inhibitor rings form his wrists and ankles and then his fur shifts to golden

Sonic smiles as his fur shifts to golden as well

The two of them run a final time Shadow is much faster without the restraints so he wins the race

The day continues until combat training with All Might

The training begins Shadow and Kirishima are attempting to recover a training bomb from Kaminari and Jiro

Shadow simply uses his speed to get to the bomb the hero team wins

[All Might] "Young Shadow I saw you use some kind of teleportation quirk during the assessment test,why didn't you use it just now"

[Shadow] "It's simple I can only teleport to a person or a place that I am very familiar with or if I have precise coordinates of if I can see whatever or whoever it is in teleporting to,so I could only use my speed"

Aizawa tells his students to pick a class representative everyone votes Shadow is now the class representative

The next training is rescue training at the Unforeseen Simulation Joint or U.S.J

Everyone is about to start training but suddenly villains warp into the U.S.J

{Shadow} "What the hell"

[Aizawa] "Kids stay back,Thirteen protect them"

Everyone watches in horror as villains attack Aizawa

[Shadow] "Sonic,Iida go get All Might"

Shadow powers up into his golden form and begins to help Aizawa fight the villains this is pissing them off the leader of the villains Shigaraki sends out something he calls a Nomu Shadow is being overpowered but luckily All Might shows up

As All Might and the Nomu battle Shadow realizes that All Might can't keep this up

Shadow begins to gather whatever energy he has left,All Might is knocked into his weak form

{Shadow} "Damnit,I hope this doesn't kill me"

Shadow removes his inhibitor rings and charges the Nomu they begin trading blows luckily Shadow is able to defeat the Nomu and scare the villains away

Shadow is exhausted he limps over to his inhibitor rings and puts them back on

Everyone is frozen with shock by All Might's weakened form

[Shadow] "Are you okay All Might"

[All Might] "No young Shadow,I'm afraid the last remaining sparks of One For All have left my body,I guess that's the downside of giving my quirk to two people"

Shadow wipes the blood off of his face the Nomu has given him a new scar