—3rd Person POV—
Hit with an incredible amount of force, Gigantomachia was unable to withstand the impact and was sent crashing into the ground. Sinking the villain into a fifty-foot crater, the giant was left stunned and frazzled. Trying to stand back up, he found that his body wasn't responding to him correctly as he was completely locked up from the residual electricity.
Hearing dozens of Kessler's missile attacks raining down on him Gigantomachia activated his Mole Quirk. Creating armored plates all over his body, Gigantomachia hardened his skin to the max to prepare for the onslaught. Feeling his body start to slowly respond to him again, a chill ran down his spine as he felt overwhelming dread crash over him from above.
"Stop wasting my time, this isn't a game boy!", Kessler told him telepathically.
Flying past his projectiles, Kessler slammed his fist into one of the armored plates on Gigantomachia's back.
"Kessler, you can't break those armor plates!", Mirko shouted from nearby as she guided civilians away, "You will only-"
Watching the plate shatter under Kessler's fist, she watched the rest shatter for no apparent reason as his blood sprayed everywhere. Screaming like a stabbed animal, Gigantomachia felt his spine break into splintered fragments. With his armor now in pieces, the giant had no protection from the incoming bombardment. Slamming into his back like rain, missiles made of light, electricity, ice, napalm, smoke, and concrete tore him to pieces burying shards of his armor deep in his body.
Flipping out of the dust cloud the bombardment was creating, Kessler looked back to see everyone standing there dumbfounded.
"Are you all waiting for an fucking invitation?! Get these civilians to shelter now!", Kessler ordered motioning for them to get moving.
As bombardment came to end, Gigantomachia swung his left arm in anger trying to crush Kessler. Catching Gigantomachia's arm with a massive projection of his hand, Kessler crushed it like breaking a twig.
"I am disappointed, I expected better from All For One's guard dog.", Kessler mocked, "Your weakness disgusts me!"
Shaking in fear for the first time in a while, Gigantomachia realized that this Hero wasn't normal. Having fought All Might in the past, he knew the man in front of him far exceeded him in every expression of the word. He was giving his all to kill this Hero, and Kessler wasn't even breaking a sweat.
"Mirko, I got this guy. Have the police and heroes focus on the rescue effort.", Kessler said as Gigantomachia started to fly into the air.
Moving his eyes around in panic, the villain tried to figure out what was happening. Looking at Kessler, the Hero gave him a smile that told him he was the one doing this.
"Let's take this outside the city, you have done enough damage today.", Kessler remarked shooting the villain out of the city and into the surrounding mountainside, "I will be done in a few moments."
Vanishing from her view, Kessler reappeared in front of Gigantomachia. Kicking him across the face with his right foot, the giant felt his jaw shatter into millions of pieces as he slid across the rocks. Following up the kick with a flurry of blows, Gigantomachia roared as his adrenaline kicked in causing him to bulk up to his max size.
"You are a danger to Master!!", Gigantomachia shouted as his voice shook the ground, "I will kill you!!"
"Shut up and fight!", Kessler spat with an annoyed look, "I have seen elderly people fight better than you."
Generating a full-body projection of himself, Kessler effortlessly blocked the villain's flurry of chaotic blows. After each blocked blow, Kessler delivered a devastating blow to the villain though Gigantomachia was too far deep into his adrenaline rush to feel the damage. Broadcasting the fight throughout the world, the reporters commented on how one-sided the fight was.
"Ladies and Gentleman we may be looking at a new legend in the making!", one reporter stated.
"Lightning Hero: Kessler is making a mockery of a villain that even some of Japan's best upcoming Heroes couldn't stop. It's no wonder the crime rate has plummeted since his arrival in Japan, If I were a villain I wouldn't want to cross his path!", another reporter remarked.
While the reporters were commentating, Kessler's adopted daughter was cheering for him from the sidelines along with several of her classmates.
"Go Daddy!!", Eri said as she jumped up and down, "Beat up the scary, bad guy!!"
"Haha.", Fuyumi laughed at her joyful enthusiasm, "Kessler is certainly way stronger than I thought."
Hearing her comment as she walked by, Mirko voiced her agreement.
"I'd expect nothing less from a man that can keep up with me.", Mirko remarked not thinking about what she was saying.
Hearing Mirko's comment, Fuyumi immediately covered her mouth in shock. She knew that Mirko and Kessler were close and trained quite a lot, but she didn't realize they were in that sort of relationship. Cursing herself for not making a move sooner, Fumuyi refused to back down now. Having seen Kessler's caring heart on television and how Eri talked about him, Fumuyi had grown to like Kessler quite a lot.
'I may not be a fighter like Mirko, but I can certainly best her in other areas.', Fumuyi thought, 'The way to a man's heart is through his stomach, that's what mother always tells me.'
While she thought of a way to outdo Mirko, Kessler was finishing up with Gigantomachia. Making Gigantomachia float again, Kessler's projection began to glow brightly as it started alternating through millions of colors. Drawn into the light show everyone viewing the broadcast watched in amazement.
"Keep a seat warm in hell for your Master, he'll be joining you shortly.", Kessler said with a cold look, "Bon voyage!"
Exploding into billions of light beams, the projection showered Gigantomachia with molten, hot lasers. Turning the villain into swiss cheese his lifeless body collapsed onto the ground never to rise up again.
"Gigantomachia is down!!", the news reporters shouted into their microphones.
Teleporting away from the area, Kessler immediately returned to the group in Tokyo knowing full well they would need assistance.
—Earlier—
Receiving the all-clear from his mole, that Kessler was gone, All For One had Kurogiri open a portal to the Huntsman family home that they had visited on many occasions. Opening the portal onto the street, dozens of villains began pouring out only to be greeted by a wall of police and heroes.
"I wish that kid wasn't always right with his assessment of things…", Togo grumbled, "All I am asking for is for the normal days to return again."
"At least it's never a boring day.", Nezu stated with a chuckle.
Watching All For One step out of the portal, All Might's expression tensed up with anger. Seeing his mortal enemy in much better condition than he left him, All Might knew this wasn't going to be an easy fight. Based on the current number of villains he saw, they were outnumbered at least three to one. Noticing that All Might was staring at him, All For One cracked a smirk of amusement.
"I am sure you are surprised to see that I survived our last encounter, you did quite the number on me after all. Unfortunately, you didn't finish the job and many people had to die for my recovery.", All For One jabbed, "If only you had been more decisive like Kessler, all those people might have still been here today."
Clenching his fist in anger, All Might wasn't about fall for his taunting. Seeing that his enemy wasn't going to make the first move, All For One turned to look at the terrified students and officers. Seeing the young man that Yuga had been telling him about, All For One ordered his men to keep that one boy alive and to kill everyone else.
Knowing that they only had a short amount of time before Kessler returned, the villains made a mad dash for the police line. Ordering his men to hold their ground, the Tokyo Commissioner told the students to hang back and protect the civilians. Barreling through his comrades, Muscular laughed like a maniac as he effortlessly broke through the line of officers.
Rushing towards him to intercept, All Might quickly stopped as All For One's tendrils blocked his path. Leaping forward, All For One swelled his arm up and slammed into All Might who grunted as he struggled to maintain his stance.
'Damn it I am almost at my time limit!', he thought, 'I have to end this quickly!'
The intense air pressure the two men generated blew both hero and villain into the surrounding areas as they began fighting. Getting themselves back up, the villains, heroes, and officers began fighting close to where they landed greatly diminishing the defensive strength the group once had. Forced to face a good portion of the villains with minimal support, the student began fighting with everything they had.
Following Kessler's teachings, Shoto created obstacles to slow the villain's advances with his ice. Using the parkour training they had been receiving, the students vaulted over the obstacles and quickly started picking off the villains who were struggling to move through the obstacle field Shoto made. Encasing the hands and feet of villains as they went down, with ice, Shoto kept his focus on keeping the villains away from the civilians.
"This is much easier than in Kessler's class!", Mina said using the ice to increase her momentum as she roundhoused a villain, "It's like he makes his class more difficult than it is on the streets."
"Agreed!", Ochaco replied dropping debris on villains, "That said though, it's probably because of that we find this easier."
"Enough talking, keep beating these weaklings up!", Bakugo shouted blasting two villains in the face.
Seeing their pawns effortlessly being beaten up children, Tomura became annoyed with the situation. His master was busy with All Might and the Pros were scattered all around with the police so the students should have been sitting ducks for them.
"It's not fair, no one told us that they would be this difficult to deal with!", Tomura mumbled, "I will have to do this myself!"
Leading some of the more powerful villains toward the students, the group fell back knowing one of the villains was especially dangerous. Shattering the obstacles as he led the way, Muscular was ready to start killing. Seeing the students as easy prey, he was caught completely off guard when Mirio leaped out of the ground and threw a knew right into his jaw.
Grabbing Muscular's shoulders, as he flew overhead, Mirio used his momentum to drag the villain to the ground. Waiting for his body to hit the ground, the sensation of the grass never came. Seeing the sky vanish from view, Muscular was confused as to what was going on. A few moments later, Muscular and Mirio were shot out of the ground at high speed. Still holding on to the villain, Mirio used their combined momentum to slam Muscular into the ground knocking the wind out of him.
"Mirio, since when have you been able to do that!?", Nejire gasped as he landed on the ground.
"It's something that Kessler helped me unlock.", Mirio said with a smirk, "He's been running us ragged in class, and has been helping me after school sometimes at Nezu's request. Thanks to him I take people and objects through things with me!"
Falling back to rejoin his group, Nejire noticed something else was off about him too.
"Why aren't your boxers falling off?", she asked.
"It's something Kessler gave me too, he said the material is expensive so he could only give me boxers. I don't know what they are made of, but they don't fall off when I faze into things.", Mirio replied.
Picking himself up, Muscular was furious he had let his guard down like that. Smacking himself in the face to refocus himself, Tomura berated him for his screwup.
"Stop fooling around and get them!", Tomura howled.
Getting up to engage them again, a massive wave of earth crashed into the villains from the side as the Wild, Wild Pussycats joined the student group.