Debut

'Trace amounts of flint, steel and explosive material discovered… Calculating correct jumping angle…form complete… checking simulated reaction… projecting consequent actions… plan complete… calculating success rate… 100%… adding effects for visuals…perfect!'

Pressing his foot downwards and making the elasticity reach it's maximum from downward pressure, Rei moved his foot slightly and stomped on the ground, Rei triggered a reaction between flint, steel and explosive material found beneath the ground while creating an orange-red trail of light.

Boom!

The ground cracked, the debris flying along with Rei who was standing on a chunk of the ground.

Jumping off of the weakest part of the platform, it split into pieces as Rei grabbed a particularly sharp piece of asphalt. Throwing it at a robot, Rei aimed at a weak point even Nezu hadn't been able to find in his creation while adding a cyan trail to the piece of debris.

Boom! An explosion erupted into the ground as more debris left from the robot's place and five shards of shrapnel from the robot fell into the operating systems of five other robots. This caused them to overheat, causing more explosions and debris to fly up into the air.

'16 unchained targets… 4 shards of shrapnel approaching…' Rei grabbed the nearest piece of metal shrapnel and threw it at the others while adding a yellow trail. Rebounding off of each other, they destroyed the unchained targets and in a finale, saved four of the participants from imminent death by knockin their falling bodies onto some standing buildings.

All of this happening within seconds, everyone in his group at the site gawked at the spectacle before them, unsure of how to react.

The only thing they knew, was that a large sound exploded right behind them, then right after they looked at where it came from, the sounds of explosions and flying metal blasted their ears from where they were originally looking at.

When they looked back at the robots they were engaging, they found them broken, destroyed and hunks of lifeless, exploding and hot metal.

Looking upwards, they saw a black falling figure. Everyone froze, stuck in their response to save the falling person. Fortunately, this figure was Rei.

Crunching up into a ball, Rei waited as a large piece of debris from an exploding building was thrown at him. Rolling on the flat side of the thing, Rei jumped upwards off of it as he was about fifteen meters above flat round. Falling downwards, Rei used his legs to create a mini-whirlwind to break his fall while making the wind visible to everyone else.

The twisting gale stopped him just inches off of the ground. Lifting him upwards by a few inches more, the wind dispersed as Rei softly landed on the ground.

It was at this point, that everyone was finally able to see the figure, no, fellow examinee clearly. He was a boy right about their age wearing an all-black sleeved shirt and loose pants. His hair was predominantly black with some locks of white and red which perfectly accented his heterochromatic eyes and indifferent face. He was lean, yet muscular, and slightly tall for his age.

Then, he smiled like the spring breeze as flowers seemed to pass by his face, and the sun highlighted his looks. Some of the female examinees fainted right off the bat, and Mineta… he was pretty pissed.

Unable to relate the smiling, handsome guy in front of them, to the disaster which was the loss of their test points, everyone almost collectively screamed out one word.

"NAAAAAAAAAAAANIIIIIIIIIIIIII!!!!!!!!!!!!!!!!!!!!!!!!"

[Spectating Room]

Everyone in the office had different reactions to the incident.

Cementoss's mouth was wide open, and most would say that his jaw dropped to the floor but, he didn't have a jaw.

Power Loader's face was hidden from view due to his odd mask, but his eyes were twitching at seeing his toys get brutally destroyed within seconds.

Hound Dog, for a brief moment of time, fell silent, before he started barking due to shock and agitation.

Recovery Girl was shaking slightly in her seats and scanning for anyone who could be injured.

Ectoplasm's jaw, however, did drop to the floor while, Present Mike, for once in his life, fell silent and speechless.

Eraserhead was showing a smile he would only show in combat with his father who turned him into a battle junkie. 'So, that kid dad got beat by did indeed have other abilities than martial arts. No, that seemed like a perfect battle simulation with a perfectly predicted outcome rather than a master. Does he have an intelligence quirk?'

Midnight's first impression was that of a reprimanding older sister before hearts formed in her eyes and drool slipped out of her mouth due to the charming and perfect face on the screen. It wasn't just the women near him who were charmed by his looks, it even worked on Midnight past the monitor. 'Goddamn! I think I want this kid!'

Nezu didn't have the energy to reprimand Midnight for her apparent lust due to him being in tears. 'No! This kid destroyed so many of my creations so quickly! I didn't even know that was a weak spot! Damnit! Nooo! I built these over one whole year! Why! Why did you have to so heartlessly destroy them!'

Noticing this, All Might mindlessly pressed the button for the 0-pointers to activate while he thought, 'What the hell! This is the power of that kid! I think his name was Rei Yaoyorozu… he was the one in the hospital room that Toru adopted!'

A few seconds passed after All Might pressed the button and nothing happened. Seeing this, All Might and a teary-eyed Nezu (who just got back to his senses), pressed the button like it was a cookie clicker (who even remembers those now).

Looking at each other, All Might asked, "Should this be happening?"

"Nope, I'll get to work and see what's happening." Nezu started typing on the keyboard to check for diagnostics, before freezing in place after seeing the diagnostics report.

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0-pointer Robot 1 (Destroyed in Hangar)

0-pointer Robot 2 (Destroyed in Hangar)

0-pointer Robot 3 (Destroyed in Hangar)

0-pointer Robot 4 (Destroyed in Hangar)

0-pointer Robot 5 (Destroyed in Hangar)

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The other teachers looked in, before looking at each other, then looking back at the screen, Taking a big breath, all of them shouted, "NAAAAAAAAAAAAAAANIIIIIIIIIIIIIII!!!!!!!!!!!!!!" except for All Might who held his face and shouted, "OH MY GOD!!!" after puffing up into muscle form.

"Hehe um, how about we use stage level robots?" Nezu asked while scratching his head.

Everyone in the room nodded as Nezu pressed a big, red button. As everyone waited in anticipation, they waited…and waited… and waited… and waited… only to be left with nothing.

"Um, Nezu… can you do a diagnostics report?"

Begrudgingly doing so while in shock, Nezu pulled up the diagnostics with an even bigger mouth.

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Stage 1 Robot (Destroyed in Hangar)

Stage 2 Robot (Destroyed in Hangar)

Stage 3 Robot (Destroyed in Hangar)

Stage 4 Robot (Destroyed in Hangar)

Stage 5 Robot (Destroyed in Hangar)

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"Well, that leaves us with the last resort robots," someone said as Nezu pressed an even bigger button.

Instantly, the room flashed bright red, and from the middle of the centre, as seen from the monitor, a large robot rose from the ground, protected with multiple shields and holding a multitude of guns, rockets, lasers, swords axes and spears.

[Battle Center]

Rei had had it with the number of people reprimanding him for 'stealing their kills,' and blended into the crowd before escaping to a nearby ruined building. 'What do you mean I stole your kills? You guys were never close to beating those guys yet, and I don't really care either way. Besides, I'm only doing this because Mineta's here.'

Rumble!

Suddenly, the ground shook, as an immense, robotic, monstrosity rose from the ground. It's weapons aimed at the rest of the examinees, Rei thought, 'I was really surprised when I discovered this, and I want to make the biggest spectacle I could, so U.A., get ready for the biggest surprise of your life!'

Running to the robot, Rei thought in his mind, 'Calculating Plan for style and effectiveness… Calculating Atomic Movement… Calculating Perfect Timing… Completion possibility…100%…Activate Strengthening Quirk…Special Move: OVERDRIVE… Selecting Targets… Both legs for 1 second… Special Effects Quirk for 10 seconds…Calculating Timing…perfect!'

Suddenly, the world seemed to change colour. Everything except for Rei turned grey. Jumping off of the building, his legs, whose power was increased incredibly shot Rei straight at the robot.

Grabbing a piece of nearby shrapnel about as close as you could get to a sword, Rei lifted it above his head and swung it downwards, breaking the bonds holding together the plasmic shield.

Unhindered, Rei ran on top of the flying debris and rockets fired at him before finally arriving at the robot's head.

Jumping in front of the robot's head after discovering the weak point in its red sensor for an eye, Rei held the piece of shrapnel once more, Rei swung it downwards while shouting, "Atomic Slash!"

The sound of the slash was silent. No sound was made by the two pieces of metal colliding. It seemed as if it had phased through. However, as fate denied it, the head of the robot exploded, giving colour back to the world.

Landing softly on a nearby building, Rei smirked before heading back to the battle centre's entrance.

[Spectating Room]

Everyone in the room had their jaws dropping to the floor save for five people. The first of which, just had his mouth open due to the fact that his haw didn't protrude out of his mouth and the second, was due to his mouth being stuck in a cage. The third was grinning from ear to ear like a madman, the fourth was practically drooling at any monitor which held Rei on it and the fifth was rolling on the floor in tears at seeing his hard work destroyed like it was nothing.

After everyone composed themselves, save for Midnight who got a head chop from Ectoplasm, they all said, "Holy Shit! That was amazing! He was even stronger than that recommendation girl Yaoyorozu."

One person picked up the file and shouted out, "They're brother and sister! And also…Engaged!?"

Midnight slumped in her seat at that remark as Nezu spoke, "Well, it is legal (I checked Wikipedia for this). Just, very, very uncommon."

'Hmm, that power. Looking at his quirks though, they don't seem to allow this. Strengthening only allows for a 10% increase in ability. Maybe he found a way to increase that? The consequences shouldn't be very good. He does seem a bit tired. But strengthening his brain wouldn't give these results, as he would need to have an immense understanding of most sciences and mathematics to do this. Well, he did basically skip school due to his intelligence. But his special effects quirk shouldn't have the power to do stuff like atomic slashes. I can understand the colour thing as an illusion, but hmm… whatever it is, he's dangerous.' Looking at the young man in front of him, Nezu thought, 'We need to keep him in our side, or the consequences will be disastrous.'

An extra in the back added a suggestion, "How about we use this to advertise? This is good publicity both for him, and us in the long run."

"Yeah, that would work," everyone else said in different variations. As the room filled with noise, Present Mic shouted, "The Examination is Over!" before joining the argument.

Eventually, it was decided that Rei would be the new mascot of U.A., and the staff gave all the recordings of the students to their personal advertising group.

[Back at the Mansion]

Click! Click! Click! Click! Click! Click! Click! Tap!

Click! Click! Click!

Victory!

"Yaaaaay," both siblings sluggishly said before turning off their monitors and cuddling in bed.

Seeing Momo's lustful gaze towards him, Rei smirked before moving forward to kiss her, immediately gaining dominance over her tongue.

Just as they were about to go further, Momo's phone rang with a poTube (Yes, this is what I could gather from the anime) notification. Clicking it, Momo found a new advertisement, with… Rei's face as the cover!

Showing it to her lover/ brother, they both gawked, before smiling happily.

Looking at his wife, Rei said, "I guess my debut is a little earlier than expected."

Giggling at her husband's response, Momo replied, "Well then, I guess I'm going to give you a reward today."

Pulling herself closer to her husband, Momo whispered in his ear, "Do me so hard that I'll be fully open, unconscious, and unable to walk for the next three days."

Lustfully licking his lips, Rei pushed Momo onto the bed, before her screams of ecstasy spread throughout the mansion.