Raging Battle Training of Claws vs Explosions!

Izuku and the rest of his classmates of Class 1-A are sitting at the desk after having a normal class time in UA that the do like learning English, History, and having lunch served by the Cook Hero: Lunch Rush. And now it is time the lesson they have all been waiting for, Hero Basic Training.

"I am here! Coming through the door like a Hero!" All Might entered the classroom and marching to the front all heroically as the students are excited to see him being their teacher and notice he is wearing his Silver Age costume.

"Welcome to the most important at UA High. Think of it as "Hero-ing 101." Here you will learn the basic of being a pro and what it means to fight in the name of good!" All Might explained about this special class.

"(Yeah, let's get wild!)" Izuku thought smirked.

"Now for today's lesson will pull no punches!" All Might revealed at card that says BATTLE on it.

"Fight training!" Katsuki excited.

"Real Combat!" Izuku feeling pumped for this.

"But one of the keys of being a hero is… looking good!" All Might pointed at a wall as it slides open sleeves with metal briefcase and numbers on them.

"These were designed for you based on your Quirk registration forms and the requests you sent in before school started." All Might said and the students are gasping of exciting of finally getting to wear their costumes.

"Get yourselves suited up, and then meet me at Training Ground Beta." All Might instructed as the students respond "Yes, sir!"

(Training Ground Beta)

All Might is seen waiting at the exit for the students to finish changing into their hero costumes and are now coming out of the tunnel with the exit sign on it.

"They say the clothes makes the pro, young ladies and gentlemen, and behold, you are the proof!" All Might complimented as he got a good look at his students' costume and their awesomeness.

Izuku Midoriya. His hero costume is a green full-body jumpsuit with a red belt, elbow pads, knee pads, and gloves, along with his signature red boots with a couple new details. The gloves have arm braces and the shoes have iron soles. He also wears a mask with long ear-like protrusions that resembles All Might's haircut, and a respirator with a makeshift smile on it that also reflects that of the said hero. The mask also has black part over his eyes with white eyelids and the respirator have sharp teeth designs too.

All Might is proud of seeing successor's hero costume is so cool and notices a couple of details like the hair and his smile thinking they look funny on him.

"Now, shall we get started, you bunch of newbies?" All Might excited to see what these freshmen students are capable of.

"Ah, hey Deku!" Ochaco called out.

"Hey, Ochaco. Wait, did you just called me Deku?" Izuku asked.

"Yeah, I just thought it's a cool nickname since Bakugo calls you that all the time. Plus, I think it's kinda cute sounding like "You can do it!" kind of vibe." Ochaco explained.

"Oh, well then, you can call me Deku. By the way, that costume of yours looks awesome, like an astronaut." Izuku complimented.

Ochaco's hero costume consists of a black full-body suit with a pale pink design down the middle of her torso, two black circles on her chest, and a black rectangle below her waist, running between her legs. There are two more pink patches over her shoulders, both cut off by darker pink armbands that match the thick choker around her neck. She has circular wrist guards, a dark pink handle on the back of each one, wide knee-high boots with magenta soles and a two-piece belt around her waist a circle embedded into the center where the pieces join up, a helmet with a tinted visor sometimes worn on her head, all of which are the same pale pink color.

"You think so? I think your costume looks better than mine, I should've been more specific about what I wanted. This bodysuit is skintight, not really my style." Ochaco embarrassed of her costume a little.

"Really, I think you look great in it and sexy." Izuku blurted the last part.

"What?" Ochaco confused, wasn't sure she heard that right.

"Huh, great! You just look great!" Izuku said quickly as his face blushes under the mask.

"I love this school." Minoru said with a thumb up and Izuku is confuse with a slight anger towards him.

"Hey Izuku, what do you think of my costume?" Tsuyu asked.

Tsuyu's hero costume consists of a bright green turtleneck bodysuit, tan-colored gloves with large buckles on each wrist guard, and two matching belts, one above her breasts, a strap at either side going around her shoulders, and one around her waist, little green dots embedded into it all the way around. Two black lines run all the way down her suit, each framed with yellow, and she wears tight black boots with markings in the shape of a "V" on her thighs, green webbed flippers resembling frogs' toes on her feet. She wears a headband, its color matching that of her gloves, and goggles with dark green-tinted lenses attached on either side.

"You look great too, going all green for the planet and frogs alike!" Izuku complimented.

"Thank you. Ribbit." Tsuyu thanked as her cheeks blush a bit.

Katsuki is watching from a few feet from Izuku talking to the two girls. Thinking his rival might be getting himself into what it feels like having girls crushing on him, but he cares less about that as he wants to fight him today.

"Now that you're ready, it's time for combat training." All Might declared.

"Sir!" Tenya raised a hand.

"(Oh, so that's Tenya's costume. It looks cool though I can't help but feel like I've seen the design somewhere before.)" Izuku thoughts on Tenya's costume.

Tenya's hero costume consists of a black one-piece suit with a high collar, over which he wears various pieces of armor, all a pale silver in color, including a chest plate, a metal collar around his neck and another around his upper arm, and metal vambraces that extend past his elbows pointed at the ends. He wears a helmet covering his entire face, its sharp bevor full of holes to allow him to speak and breathe easily, and its upper piece rounded over his head with two larger holes on either side, two curved horns just behind and a single spike sticking out of the back of his head. On his feet, he wears silver knee-high boots with gold accessories, which are specialized for his Quirk, and around his torso, he has three thick metal pipes, attached with a blue band, although these only serve as decoration.

"This is the fake city from our entrance exam. Does that mean that we'll be conducting urban battles again?" Tenya asked.

"Not quite, I'm going to move you two steps ahead." All Might answered.

"Most of the villain fights you see on the news take place outside. However, statistically speaking, run-ins with the most dastardly evildoers take place indoors. Think about it: backroom deals, home invasions, secret underground lairs. Truly intelligent criminals stay hidden in the shadows." All Might mentioned.

"For this training exercise, you'll be split into teams of good guys and bad guys and fight two-on-two indoor battles." All Might explained.

"Isn't this a little advance?" Tsuyu asked.

"The best training is what you get on the battlefield! But remember, you can't just punch a robot this time, you're dealing with actual people now." All Might pointed out.

Then the students started asking some question which made the number one hero growls a little and pulled up a script to explain what the scenario of this exercise is going to be like.

"The situation is this. The villains have hidden a nuclear missile somewhere in their hideout. The heroes must try to foil their plans by either have to catch the evildoers or recover the weapon. Likewise, the bad guys succeed if they protect their payload or capture the heroes." All Might explained.

"Sounds like something from an action movie or a video game Kacchan I used to play." Izuku muttered to himself.

"Time is limited, and we'll choose teams by drawing lots!" All Might said holding up a lots box.

"Isn't there a better way?" Tenya asked, not liking things to be done random.

"There's nothing to worry about. Pros are offend have to team with heroes from other agencies right on the spot, so it's kinda what we're doing right now." Izuku pointed out.

"Yes, I see. Life is a random series of events. Excuse my rudeness." Tenya apologized as he bows to All Might.

"No sweat, let's draw!" All Might pumped up.

Soon, everyone has been assign partners including Izuku being paired up with Ochaco.

"Wow, what are the chances? We're a team!" Ochaco cheered.

"(I swear, it's like life is playing with my love life or something!)" Izuku thought as he has to remember that he has his adopted mother as his lover.

"I declare the first teams to fight will be… these guys!" All Might pulled out two ball with A and D on them, shocking of Katsuki and Izuku that they will be fighting each other first but are also exciting as team A will be the heroes and team B will be the villains.

"Alright, now I'm really pump up!" Izuku excited viciously.

"Uh, you're kinda scaring me, Deku." Ochaco said nervous.

"I can't wait to crush Deku beneath my boots!" Katsuki growled smiling.

"Please reframe your cruel mood." Tenya begged.

Later, All Might had the villain team go into the building to get a head start on the preparations while Izuku and Ochaco are waiting outside planning on how to win this fight.

"Okay, you got all that?" Izuku asked Ochaco if she understands the plan.

"Yeah, I got the gist of it, but… I'm worry about you two fighting." Ochaco said.

"Don't worry, this is training so we won't kill each other. Just a little blood spill from here to there." Izuku said as he unsheathes his claws on his right hand.

"(That's more to worry about!)" Ochaco thought gasped.

"BATTLE START!" All Might announced from the monitor speaker.

"Okay, let's go!" Izuku said.

The two enter the building through a window on the second floor and walking through the hallway sneaking around and checking every corner not seeing either Katsuki or Tenya so far, but that doesn't mean they won't let their guard down as they walk up to the fourth floor.

"Okay, if you're right about this then Bakugo should be coming to find us alone." Ochaco whispered.

"Right, because he doesn't like to work with others, this should give you the chance to find Tenya guarding the weapon to try to get the weapon since you can't capture him due to his speed." Izuku whispered back.

"Okay, I'll try to" Then suddenly Katsuki comes out of the corner throwing an explosion punch at her, but Izuku manage to shield her.

"Deku, are you okay?" Ochaco worried.

"Don't worry, I can heal but half of my mask is destroyed." Izuku informed.

"Come on, Deku, it's time we settle this." Katsuki smirked.

"Ochaco, get going, now." Izuku ordered as he release his claws and Ochaco nods before running to the upper floor to find Tenya and the weapon.

(Music: X-Men Evolution Opening Theme)

Izuku and Katsuki charge at each other, Katsuki manage to push him back with an explosion as he got slight slice on the cheek though Izuku remain unfazed as he headbutt his childhood friend and grabbing his arm to throw him to a door at the end of the hallway while using 10% of One for All.

Katsuki gets knock into a wide-opened room and quickly react on Izuku charging at him with a clawed right hook, narrowly dodging to his left and unleash a big explosion engulfing and knocking him back several feet away, but his attack wasn't finish yet as he explode-dash himself forward at Deku with a swing kick to the head though it hardly hurt his opponent. Izuku grab his leg and slams him down to the ground three times and threw him to a wall, he leaps strongly for a knee to the stomach making Katsuki gasps in pain and Izuku start slashing at him. Katsuki smirks as he slam his palms on the wall behind him causing some explosions to create a smokescreen and kick Izuku away to conceal in the dust cloud running around to get on the jump on him as he makes more dust clouds around.

"Smart in your own way as always, but it seems you forgotten one thing." Izuku grinned as he sniffs in the air for Katsuki's scent.

He picked it up on his rival's scent as Katsuki jumps to explosion slam in the back of Izuku's head, but the green hero turns around faster than he move and slash his claws at the right side of Katsuki's torso and grabs him by the neck.

(Music End)

"The nose knows." Izuku said.

"I know, which is why I'm going to shut that shitty nose of yours!" Katsuki pulled down the mouth mask and slam his left hand up on Izuku's face and cause an explosion right into the nostrils.

This forces Izuku to let Katsuki go as he groans in pain and holding his face.

"You fucker! You just blasted my nose!" Izuku complained.

"And you made me bleed like shit, so I think we're even!" Katsuki shouted.

"Oh, you're going to get is now!" Izuku charged at Katsuki in rage.

"Bring it!" Katsuki responded as he charges towards Izuku as well.

The two got near each about two-three feet and start clashing in a battle of explosions in Izuku's face and body vs Katsuki withstanding Izuku's slashes on his body, trying to see who can outlast each other before giving out first as they scream with all their might.

(Monitoring Room)

My god… are we really seeing this?" Eijiro asked as he and the whole class are shock and scared of seeing Izuku and Katsuki battling each other.

"It's almost like they're monsters trying to destroy each other while destroying their surroundings." Toru stated while hiding behind Mashirao.

"Are those really into becoming heroes?" Momo asked feeling the cold sweat running down on her.

"Trust me when I say this, those two are dead serious about becoming heroes. Especially my son, Izuku since he wants to become a hero than anyone on the planet." Midnight mentioned as she is here as a special guess for today in class.

"Wow, the Rated-R Hero: Midnight even sexier in person!" Minoru excited with Denki.

"Keep your cool man, we're in class after all." Denki said smiling perverted a bit.

"So, this is how they are like when they can fight without holding back. It's dangerous yet seeing their skills and power in action is amazing." All Might commented.

"Yep, Mistuki told me those two have always been rivals to become strong which also strengthen the bond of friendship they have for each other, even though neither will say it out loud." Midnight nodded.

"It looks like Uraraka found Tenya with the weapon, but she can't touch it with his speed." Tsuyu pointed at the screen where Ochaco is having trouble with Tenya as she quickly informs Deku.

"Hey, I think they stop." Hanta said.

Just as he said, Izuku and Katsuki have stop clashing.

(With Izuku vs Katsuki)

"Alright, Deku, let see if you can withstand a megaton of my exploding sweats!" Katsuki taunted as he aims his gauntlet at Izuku.

"Bring it on! Little Spark, I'll win this battle and show you who's the top dog!" Izuku shouted.

Katsuki pulls the pin and unleash a huge blast of explosion right at Izuku at he stand firm taking the blast head on, the explosion blast cause the whole building to shake like an earthquake including the monitoring room and creating a big hole too.

Katsuki waited for a moment or two to see if Izuku is still standing or has been knocked unconscious and blasted outside of the building, but then he saw small green electric sparks in the dust cloud.

"Fatal Claw" Izuku blitzed at Katsuki much faster than he could react and slash his chest. The damage is so great that it causes Katsuki to fall unconscious face-first to the ground.

"Got to admit, that was intense. If I didn't have my healing factor, I would've been the one who lost, great battle. Kacchan." Izuku complimented on his rival's effort as his the burn marks on his body are healed almost instantly and his costume is a little ruined too.

"Now, to get to Ochaco." Izuku looked up that she is one floor above him.

"Drill Claw" Izuku spinned around with his claws above him together like a human drill coming up to the fifth floor.

"What the…?" Tenya gasped.

Izuku quickly kick Tenya to a pillar and pin him there.

"Now, get the weapon!" Izuku said.

"Right!" Ochaco said and runs to the fake missile touching it.

"NOOO! MY EVIL PLAN IS RUINED?!" Tenya screamed, acting like the villain for this training.

"The hero team win!" All Might announced.

KO a new chapter is done and hope you all enjoy it!

Hope you all like the battle of Izuku vs Katsuki going all out with their powers and skills though it was a little more brutal than anyone thought about those two, but Izuku and Katsuki will try to be more careful and restraint themselves from going too far. Keyword "Trying" when it comes to those two, but they will get some more fighting in their next class as Class 1-A's training will be taken up more than they thought.

Oh, and a good friend made me a new cover story for this. Thanks!

KO comment, favorite, and follow through of how this story will go!