Child sitting.

Shouto was reading a book in his father's office. It was extremely spacious for one person. The brown sofa he had decided to claim as his was rather comfortable. He sat in an orderly and professional fashion, as requested. His father was supposed to be getting a student from class 1-A to give an experience week at the Endeavour Agency. Shouto was only here because Endeavour could not find the appropriate personnel to keep Shouto safe. Shouto appreciated how his father had more concern for his wellbeing.

He got distracted when he began to stare out of the large glass panels that displayed the outside world from the high-rise viewpoint. The sun leaked in with an orange tint. His father was still ignited as he checked the time. Shouto looked at his crimson watch, the time read out that the student was late. Shouto rolled his eyes at the rather foolish student. Whatever impression this student wanted to make; this was definitely not the correct one. One thing his father particularly hated was having to wait, especially to someone under him. Endeavour let out a dreary sigh and eyed the paperwork neatly placed on his table.

The door slammed open with what seemed to be an explosive. Endeavour stood up from the luxurious chair. His face was unwavering, not a hint of shock or surprise was on his scarred face. Shouto noted the page he was on and folded the corner. He knew that this was bad book etiquette but he could not find anything to bookmark his current page. He gently placed it on the long glass coffee table before looking at the door with his mis-matched eyes.

"Bakugou Katsuki," Endeavour's deep voice grumbled throughout the large, airy room. The kid, Bakugou, was very unkempt. His hero costume was rather creative he had to admit. Judging from his performance in the Sports Festival it seemed as though he was very powerful. Adorned on his upper arms were bulky sized up hand grenades. Shouto found the costume quite amusing. Even the student's hair looked like an explosion of ash blond hair. Shouto realised that the student was not exactly happy at the current time. Shouto had no care for why.

"You're currently the most powerful hero," The explosion themed hero-in-training spoke, "I'm expecting that you'll get me to make some ultimate moves."

Shouto groaned as he realised that this kid was probably stuck up.

"HEY! WHAT ARE YOU GRUMBLING ABOUT? EHHH"

It seemed that he had an explosive personality to match his quirk.

"What's a kid doing here anyways? Didn't realise I went to the Endeavour babysitting agency."

Shouto giggled. "Maybe you did show up to the right place."

"EHHHH?"

"Calm yourselves," Endeavour had gotten bored of the argument blossoming before his very eyes. "I will indeed teach you with your admittedly powerful quirk. However, we will be testing your level of control before we start on ultimate moves."

"Control?"

Shouto did roll his eyes this time. How dense could this kid be?

"Follow me to the training Dojo down on floor eleven."

(-)

Shouto looked at the Dojo on floor eleven. It was flame retardant. Probably a good thing considering both Endeavour's and Bakugou's quirks included combustion and heat. Shouto took a seat on the side whilst his father whittled on about the safety regulations. Endeavour was stern as usual, often needing to berate Bakugou. Endeavour pulled out a metal target. Shouto recognised it from home. It was a thick, including multiple layers of increasing difficulty. The objective was to get right through the entire thirty centimetres. Shouto had gotten through twenty before he began to overheat and lose stamina at an alarming rate. During Shouto's training exercises he was not allowed to utilise his ice quirk unless explicitly told too.

"Give the target your most concentrated and powerful shot."

Bakugou looked down at his gloved palm before tightening his eyes. He leapt forward and unleashed a huge explosion that covered half of the room with soot and ash. Shouto, out of trained reflex, had erected a curved ice shield around his person. He swiftly melted away all the evidence before looking at the amour. If Shouto were to guess, he would put it around ten centimetres. Good. But just that. Good. There was potential of course. The multi plated metal training dummy had a large hole. Just by looking at the results of one punch, he had guessed that Endeavour still had quite a long way to go before teaching the kid any attacks that only Bakugou would find useful. Shouto sighed and took out a capri-sun from one of the pale blue drinks' coolers. He efficiently poked the orange plastic straw into the drink and sipped away as Bakugou yelled profanities at the temperamental Endeavour. Shouto chuckled as he realised how obscene it looked.

A large black and orange explosion engulfed the side of the room that Bakugou had been on. Soot and ash fell down slowly over the extremely volatile trainee. He was heavily panting, his shoulders rolling up and down. Shouto decided that now was the time for a tactical retreat. He sat back on the bench and watched as the two top heroes in their own respective categories argued. It looked extremely petty and hilariously comical.

Shouto giggled when he heard Bakugou say that Endeavour had lost all his braincells because he was so hot headed. Eventually Endeavour had somehow calmed the walking explosion down. Endeavour tapped a button on the wall and a white board was revealed. He equipped himself with a black marker pen before writing in elegant script "Quirk Theory". Shouto sighed and realised that this was going to be stale. Until he heard Bakugou scream a list of profanities and was reminded that this was actually not that bad.

"Would you mind telling me how your quirk works?" Endeavour asked rather gruffly, as if he were demanding an answer with no etiquette.

"I sweat a nitroglycerin-like substance which I can ignite on my palms, I can use my powerful quirk for movement. From the Sports festival I'm sure you've seen that I absolutely dominated the entire battlefield."

"Whilst your movement was stellar and refined, your precision is completely lacking," Endeavour told the young ticking bomb, "If you truly wish to be the number one hero, then you must be able to do so without a large amount of collateral damage."

Bakugou looked to the side and let out a reserved sneer. It was quite obvious that the explosion themed student hated having his weaknesses pointed out and stretched thin.

"You also miss a truly ranged attack," Endeavour also pointed out, "You've been currently been able to make that up with fast and quick strikes and refined movement, which is why by the end of your hero study week you will have a new ranged ultimate and you will have taught Shouto a way to utilise a ranged technique."

"Why the kid?"

"It would be beneficial for both of you."

Bakugou groaned as Endeavour began to do some quirk theory on the board. Sometimes Endeavour would ask for Shouto's input, despite how useless he actually was at quirk theory.

(-)

Bakugou's second day at the Endeavour agency was more explosive and bombastic than the last. This was the time where Bakugou would show Endeavour how powerful he was. How they would test that? Shouto had no clue.

This time Endeavour had led the two into a much larger room. It was painted white and an arena was neatly placed in the middle. Again, seats littered the side of the room. Shouto resigned to a small pale chair with cushions. Shouto had decided to forgo his book on thermal dynamics as he hoped that the training would be a good source of information and entertainment. This time Bakugou was dressed in a flame-retardant tracksuit which was similar in design to the ones from U.A. Instead of white lines on dark blue this flame-retardant suit was black with red highlights throughout. A crimson X shape encircled the chest area with two black dots on the left stripe. Gone were the bulky stylish grenade gauntlets and in its place were two sleek arm bracers. Both were black with some dim grey lines running throughout. Bakugou's dark mask now had two deep crimson lenses in front of his eyes, to help refocus vision after his flashbang attack.

Bakugou seemed to have little problems with the new gear. However, he would most likely switch back to his old costume when the week was over. Bakugou had noted how he did like some aspects and that he might incorporate them into his original design. Perhaps a costume for when it was cold and he needed to build up sweat.

"You will fight me to see how you stand up against the number one hero, from there we will decide where to go from there." Endeavour grumbled to the volatile top student of U.A. class 1-A.

"I will crush you to prove I am NUMBER ONE!"

Shouto giggled at the rather abrasive hero-in-training. Shouto quickly stopped and went dead-faced when Bakugou's red eyes glared at him. The glare held no real unkindness, just was meant to tell him to shut up before things would get unpleasant.

The two powerful heroes took their place on the arena floor. An automatic voice read out a countdown from three down to one.

Bakugou launched himself forward as the timer hit zero. His hands were behind his back, creating explosions that propelled him forward at high speeds. Bakugou raised his palm at the hell-flame user and combusted a flashbang explosion, using the momentum gained, he positioned himself behind Endeavour and let out a volatile explosion. The explosion connected with the hulking mass that was Endeavour. As Bakugou was about to manoeuvre himself in a different position, Endeavour grabbed his leg and hurtled the young teenager into the ground.

Bakugou managed to propel himself upward using the explosions on the palm of his hand. Generating momentum as he flew, he let out a mighty kick on Endeavour. Again, Endeavour grabbed his leg and yanked the explosion-based hero towards him. He reared his muscular, flame encased gauntlet backwards before unleashing a flaming fist into the chest of Bakugou. The teen soared backwards recoiling from the powerful force. Eventually Bakugou managed to stop his backwards tumble using explosions and looked at the advancing inferno.

"You always are open to a counter attack," Endeavour informed the teen in front of him, "Either hit them harder or retreat faster."

"Shut up!"

Bakugou charged with his explosions rattling behind him. He feinted a right swing before unleashing a devastating explosion to Endeavour's back. The recoil of the attack had launched himself sufficiently backwards. Endeavour stumbled and looked at the volatile teen before smirking. Endeavour had to hand it to him, he was smart and could think on his feet. Bakugou had taken the advice in extremely quickly, utilising both of what Endeavour told him.

Endeavour unleashed a ranged gust of flame, intercepting the overhead Bakugou. Improvising he launched himself even higher. He switched his momentum from going away from Endeavour, to hurtling at Endeavour. Bakugou slid underneath the titan's legs before preparing to unleash another devastating explosion. However, Endeavour had expected this and let out a red inferno from his wide back. Bakugou's nitroglycerin-like sweat ignited on his arms and he was propelled backwards without any damage on Endeavour. A wasted attack and a wasted store of sweat. It was a completely fruitless endeavour. He growled in anger as he twisted his body into as three-point position to slow his backflow.

Endeavour launched another jet of scorching flame that Bakugou narrowly dodged. Bakugou had decided to use another way to gain an extensive store of nitroglycerin. He dug his heels into the ground as he bared the brunt of Endeavour's mighty flame. Once the flames stopped, Bakugou rushed Endeavour. He dodged another flame whip with a roll before lunging at the hulking inferno. He placed his two hands together and let multiple explosion rip in front of the number one hero's eyes. Once Endeavour was sufficiently stunned, Bakugou began to bounce around the room using his explosions to carry him forward. He began to strike at random, tearing down the defences of the best combat hero.

Endeavour let out a burst of flame that surrounded himself in a circle of flame. The flames were extra hot this time, a warning to not come close. A fire whip flew out of the inferno. It circled around the arena before latching onto the mid-air Bakugou. Bakugou was entrapped in the fiery mess.

"You cannot move; therefore, I win." Endeavour's voice boasted through the scorching inferno.

"You didn't go all out." Bakugou stated. He was very much annoyed at being underestimated.

"If I went all out, I would have never been able to gauge your abilities or mannerisms in a combat situation." Endeavour explained to the ferocious explosive teenager.

Bakugou grumbled under his breath but kept the insults to a minimum as Endeavour's rebuttal had made an alarming amount sense. Endeavour had already set up the whiteboard and had begun writing about Bakugou's strategies and tactics. He had noted how Bakugou's main attack plan was to create a diversion and then strike. Usually the target was the back of the enemy. Endeavour noted how this was effective for an enemy who had never fought you before or as a random attack during a fight. But the problem was that it was either: a) Easy to counter b) repetitive use is predictable after two strikes c) ineffective.

"tsk"

"If you truly want to be number one you must conquer all weaknesses in combat," Endeavour scolded the first year. "Shouto! How do you propose he go around these weaknesses?"

"The kid?"

"Perhaps he could use a diversion frenzy, occasionally using heavy hitter attacks to knock them off balance," Shouto explained what was on his mind, "if he had a ranged attack, I would suggest using the enemy as a bounce board to launch yourself high in the air to rain down projectiles."

Endeavour smiled proudly at his son's comprehensive answer.

"Well examined Shouto!"

Bakugou began to yell a lot of profanities. Shouto blinked at the sheer volume of profanities coming out of Bakugou's mouth.

"That's enough theory for today, now we shall go on patrol around the area surrounding the agency tower, then you can go home."

"Finally!" Bakugou yelled.

(-)

Bakugou had equipped his old costume with the grenade gauntlets. He kept the new mask and had outfitted the costume to work better in the winter. He had a collar that wrapped around his neck. His arms were now covered in the flame-retardant tracksuit. His boots now had spikes on the bottom for better traction and as a weapon. The half n' half boy had to stay in the office of the building however. Something about not being old enough to go out on patrol. The boy did protest by saying that he had been on one before, only to be shot down by Endeavour reminding him what happened the last time he went with Endeavour on patrol.

Apparently, the little kid had been there at the scene when Endeavour had gotten his large scar that mottled his features. Bakugou would have thought that the kid would have been traumatised or something. But it seemed that fate was being particularly kind to him by leaving him with no trauma. Bakugou did not intrude on the father-son conversation but still listened in anyways.

They had decided to walk down the suburban streets. Fans looked at them in awe and caution.

"Can I have your autograph?"

This kid had some serious bravery too approach Endeavour. Endeavour blinked at the little kid before crouching down and carefully removing the marker pen from the little child's hand. He neatly wrote his Hero Alias in a fancy, elegant and almost fire-like script. It was a poster of Endeavour in his new costume, standing tall with a raised fist. The poster depicted Endeavour with his nasty scar and a smouldering flame beard.

The young boy thanked Endeavour and scuttled off to his parents. The young boy waved the poster at his parents, proud that he had wrangled an autograph from the volatile number one hero.

"You give kids autographs now?" Bakugou Katsuki grumbled the question to Endeavour.

"If he had the courage to face me despite my media portrayal, he deserved it." Endeavour justified to the young hero.

"Excuse me mister, but did you win the U.A. first year Sports festival?"

"Heck yeah I did." Bakugou responded to the girl. He estimated the girl to be his age if not, older. She had her black hair in a pony tail and her bangs were to the side of her pretty face. She had a strong taut nose with azure eye framed either side. She had faint freckles underneath her long eyelashes.

"You're the one who kept beating on Uraraka." A frown had decided to corrupt her adorable features.

"What about it?" Bakugou narrowed his eyes with hostility.

"You could have finished it early by using that super attack that you used on Tokoyami."

"I didn't have enough nitroglycerin for the Howitzer impact."

"Nitroglycerin?"

"The thing I need to make explosions" Bakugou explained to the teenage girl. Her eyes widened and then closed in recognition and understanding.

"Sorry for insinuating anything. I just wondered why. All my friends thought it was too brutal."

"If it was too tough for her she would've given up." Reasoned Bakugou. Sure, his logic was flawed in many ways but it still made some sense. He hoped that this patrol got livelier because he was dangerously close to being bored. The pretty teen girl waved good by and retreated back into the fray of people.

"Are any villains actually gonna show up?" Bakugou grumbled whilst smacking his fists together in a punching motion.

"Sometimes villains won't pop up on patrol, Patrols are really just for showing the world that we do indeed exist and they can be calm."

"That's stupid"

"It may seem that way."