---
At Tartarus prison, the guards notice how one of the prisoners has become more active since the following day.
One guard states he wishes they would hurry up with their sentencing, while the other reminds him of Gigantomachia's recent appearances,
"He's a direct subordinate of All for One's. It's not just the league of Villains led by Shigaraki Tomura. We don't know how many sympathizers of his there are, and not wanting to cause any unnecessary provocation."
"Anyways, have you heard about the other report yesterday?"
"What is it?"
"There are people encountered the same Uppermoon who appeared at Kyushu after Hashira defeated the Upper Two."
"Seriously?!"
"Yeah. But, the Uppermoon didn't do anything to the people who saw him. Ever since that Uppermoon killed Tomioka F/n, he stopped making appearance until now."
"No doubt about it. That monster is after Hashira."
---
Back in the training ground, round 5 has begun, As the Class A team make their way forward.
Midoriya leaps out ahead of his team, using his One for All: Full Cowl, to propel himself through the pipes at high speed.
Y/n looks back at the others, "Remember to look at each other when you talk."
"Right."
Suddenly a container flies towards Midoriya, although he dodges it and kicks it off. Midoriya is aware that that attack is the product of Yanagi's Quirk, but before he can continue thinking about it, he seemingly hears Uraraka screaming.
Y/n halted as well as the others. Hiding behind the pipes and tries to locate carefully to find their opponents.
"Can you hear anything?" Mineta asked.
"Oh, yes, somebody just said, "Can you hear anything"?" Y/n replied, jokingly.
"That voice wasn't me." Uraraka shooked her head.
"Then, it must be Shinsou. He must be around somewhere." Mineta says.
Y/n look for Midoriya and couldn't find him anywhere. "Izuku has gone far ahead. I'll go on ahead too."
"Be careful!"
Just as Y/n was about to move, a barrage of objects around the area and throwing them at random.
"Acid Veil!" Ashido uses her supermove to protect the team. Y/n unsheath his nichirin blade and slashes the objects into pieces.
However, the destruction of several of these objects allows Shoda to locate their position.
"We have to keep Tomioka here until Monoma and Shinsou got Midoriya."
With this information, Class B team begins their real attack. With Yanagi still controlling the items.
"Release." Kodai uses her Size Quirk to change their mass as a means of throwing their opponents off.
Uraraka uses her Zero Gravity Quirk to stop the onslaught of metal projectiles and keep them in the air.
"Twin Impact. Fire!" Shoda add a second wave to the barrage with his Quirk. Y/n's teammates yelped as they avoid the objects.
"This is annoying. They're attacking us while their hidden." Y/n hurls bombs to blow the objects to dust.
"What was that? Explosion?" Kodai asked after hearing an explosion.
"Still, I know roughly where they are- wait." Shoda looking at the radar and sees three red dots. "Only three of them? Where's the other one- oh no."
"That scared me!"
"Midoriya wasn't able to lure them away!" Uraraka and the other two attempt to run.
"Wait! Where's Y/n?" Ashido asked.
"He probably left to find Midoriya or Shinsou." Mineta says, as he glanced around.
"Then, we'll take care of the Class B who attacked us." Uraraka declares.
---
Back at Midoriya, he continues to shoot blast at Monoma, who takes cover behind a large pipe while still taunting Midoriya.
Through the maze of pipes is where Shinsou is hiding, trying to find an opening to brainwash Midoriya.
"So this is where you're hiding." Shinsou was startled and saw Y/n standing behind him. He prepares his binding cloth and attacks Y/n.
'Crap. He found out my location. How did he even-' He recalled that Y/n has a technique called echolocation that he rarely use.
---
"Oh! Y/n found Shinsou!" Kirishima exclaimed.
"This should be interesting." Sero says. He took a glance at Class B as they were watching closely to Y/n.
Aizawa narrowed his eyes as he stare at Y/n and Shinsou.
"Sensei, why doesn't Tomioka remember me?"
---
Y/n strikes first with a quick thrust of his blade. Shinsou barely dodges each stab until he slips up and gets hit with Y/n kicking him to the gut.
Shinsou groaned as he distance himself from Y/n. "I know well that I won't win against you, Tomioka."
Y/n didn't respond as he's being cautious of getting brainwashed.
"Tomioka.." Shinsou dodges when Y/n strikes him again. He uses the binding cloth to ring down a pipe at Y/n.
Y/n easily deflects it with his blade and slashes the binding cloth. "You have a Demon Quirk. It's like those demon you fought."
Y/n furrow his brows, then whirlpool forms around Y/n when he swung his sword.
"Water Breathing, Sixth Form: Whirlpool."
(Mizu no kokyū, Roku no kata: Nejire Uzu)
Shinsou uses his capturing weapon to pull himself away from Y/n.
"They lose their memories when they became demon. Tomioka, could it be.. that your Quirk is acting up..?"
Y/n's body ache but he remain unwavered. He gave Shinsou a warning glare as his eye pupils became slit. "Why don't you shut your trap?"
Shinsou didn't use Brainwashing on Y/n when he respond, he just stare with wide open eyed at the ravenette's cold glare and Y/n speaks with his and an unknown voice.
Y/n shook his head and his eyes return to his normal (E/c) eyes.
---
Midoriya continues his barrage on Monoma as he taunts him once more, "Hey, how cam Bakugou smile so unconcernedly?
He was caught by a villain, and he was responsible for ending the Symbol of Peace!
Was it even a best choice to keep Tomioka here while he had a deadly Quirk that could kill everyone!"
This infuriates Midoriya as he prepares to shoot him with another blast. However, instead a series of black tendrils suddenly emerge from his arm.
Midoriya is scared and confused as the black tendrils are unable to be stopped as they erupt more out of control. 'What is this?!'
"Another new power? This is getting old." Monoma said as he run away.
"Run!" Midoriya screams at Monoma to run, as he uses Poltergeist on some bolts to fly out of the way, while Midoriya crashes into a nearby building.
The swordsman then rushes towards Shinsou and pushed him away when black tendrils suddenly burst through the wall.
The distressed Midoriya ends up directly in front of Y/n and Shinsou, desperately trying to hold back the power.
"Shinsou..! Y-Y/n..! Run! I can't control it!"
"Izuku?! Wha- What's going on with you?!" Y/n asked.
"It... It's overflowing...!"
"Get out of here Shinsou!" Y/n told Shinsou. The black tendrils blast their towards Y/n intensely out of the building.
"Y/n!!"
Both the 1-A and 1-B team notice, as it causes destruction across the entire arena, carrying Izuku and being knocked into buildings
"Stop! Stop! What is this?!" He continues to cry why it's happening as the pain gets to him.
At the viewing area, everyone wonders if Midoriya develop a new technique.
Midoriya reflects on how after he first got One For All, he kept hurting himself because he didn't know how to use it, but eventually he was able to get it under control, but now that the power is wreaking havoc and he is unable to do anything, he becomes increasingly upset as he doesn't want anyone else to worry about him.
Meanwhile, Y/n gets up from a ice lotus that became a cushion after getting blasted. "Wow. He threw me out really far. I have to get back now."
While the tendrils continue to rampage, Uraraka suddenly appears, grabbing ahold of Midoriya.
"Deku, calm down! Deku!" Uraraka tells him. She starts to wonder, 'Who protects the heroes when they are hurting?'
Uraraka spots Shinsou nearby, and screams at him. "Shinsou! Use Brainwashing! Use it to stop Deku!"
"Use Brainwashing on Midoriya?!" Shinsou wonders what he should say to him, and thinking about their fight at the Sports Festival. He takes off his persona chords and yells at Midoriya.
"Midoriya! Fight me!"
Midoriya glanced at Shinsou and barely respond to him. "Yeah..!"
---
Entranced by his Brainwashing, the black tendrils return to inside Midoriya as he re-emerges back in the vestige dream world of One For All.
"You.. You've got it wrong. Wrong! Didn't we tell you? We said, You're not alone!"
He is then suddenly approached by a tall, buff man in goggles, which he recognizes as one of the one of the previous One for All user.
As he continues to shout advice, Midoriya realizes he can't respond due to not having a mouth, as well as realizing the users aren't simply vestiges, but fully conscious beings living within One For All.
"Looks like my time's running out." The user reveals the black tendrils are actually his Quirk, Blackwhip.
He states that the previous users' Quirk Factors mixed in with the original core of One For All, and that it has started to grow.
"You're lucky I was the first one. This is a good Quirk." He warns him that it has grown much stronger since thanks to One For All's enhancements. He tells him that if he uses the power in anger, it will react to that, and that it's important to control his heart.
"Oh no, I'm going to disappear... I feel like I'm about to drift away..." The former user of One for All look at Midoriya.
"Listen. You're friend there, Tomioka Y/n. There's a pure evil hiding within him. We fear it might be even more dangerous than All for One himself.
One of boy's predecessor, Kamado Tanjiro, warned us."
---
"Deku! Deku!"
Back to the real world, Uraraka immediately slaps Midoriya to wake him from the brainwashing.
"Deku? Did the slap hurt?" Uraraka asked.
"Uraraka.. Get away! It's dangerous!" Midoriya exclaimed but Uraraka calms him down as they float in mid-air.
"It's fine. Shinsou's Brainwashing took care of it. Are you okay?"
Landing on the ground, Midoriya realizes Uraraka's been hurt by the Blackwhip "Uraraka! You're hurt..."
Before anything else can happen, Monoma rushes to swipe at Midoriya, forcing him to jump out of the way.
"Gunhead Martial Arts!" Uraraka tries to pin Monoma down, which force him to jump away.
"It's not over yet, though!"
"Release."
"Fire!" Shoda and Kodai soon arrive, using their Quirks to keep the two contained while Monoma laughed. Shoda lament how the black tendrils ruined their plans.
"Are you two okay? What was that just now?" Yanagi asked.
"Nice timing! Let's capture this two and win the match!" Monoma shouted.
'Not good! They got us cornered!' Midoriya thought and saw the objects were coming towards, Shinsou uses his capturing weapon to catch them.
Without thinking, Midoriya hugs Uraraka to shield her from the objects that was throwing at them.
Y/n emerges from the maze of pipes and instantly cuts every projectiles with his two nichirin blades before they can hit Midoriya and Uraraka, leaving everyone shock.
"Hey. What's with black tendrils that went crazy just now? Are you two alright?" Y/n calmly asked and crouches down.
"Y/n.." Midoriya uttered.
Y/n can only growl angrily at brocoli haired. "I thought you said your Quirk is fine now, what was that sorry state of yours! Are you trying to show off with your new technique or something? You even blast me really far and that hurts!"
'Why does it feel like Kacchan was yelling at me?' Midoriya thought.
---
"Pfft-" Class A glanced at Bakugou who was trying to keep himself from laughing. 'Damn Deku getting yelled by Y/n.' He snickered.
---
Y/n stand up and look at the Class B team, "So how long are you two going to keep hugging each other?"
The duo look at each other and blushed before they separate from each other. Yanagi uses her Poltergeist to throw barrage of objects at them.
"There they are! Take this!" Mineta shouted as he and Ashido attacks Class B.
"Midoriya! Uraraka! Y/n! You guys okay?" Ashido asked.
"We're all here now!"
"It's a brawl!" Ashido declares. as they do battle with the Class B. Some of the projectiles speed towards Y/n, who swings his swords to slice it.
Shinsou attempts to use his capturing weapon to attack Uraraka, but Midoriya darts out in front of her and grabs it, ready to face Shinsou once again.
"I'll leave him to you, Izuku." Y/n says.
Despite Midoriya's chaotic outburst, all of the students are still eager to win the fight.
Nearby in the arena, Eraser Head and Vlad King are keeping watch.
"What should we do Eraser?" Vlad King asked. All Might arrived shortly.
"All Might. Let's wait and see a bit." Aizawa says.
"Aizawa? What..."
"We'll continue the fifth match."
"Continue?" Vlad king observes the fight between Class A and B. "Midoriya was definitely strange earlier."
"If that happens again, I'll stop the match immediately and pull Midoriya out. It was stopped with Shinsou's Quirk. If it's a type of Quirk than I can stop it.
They are all still determined, Midoriya, Shinsou, and everyone in Class A and B." Aizawa stated.
Vlad King comments how Eraser Head is nicer than he looks, which he reluctantly agrees with.
Back in the fight, Ashido continues to shoot Acid shot toward her 1-B opponents, Shoda throws a Twin Impact shot directly at her.
Just then Mineta uses Grape Buckler technique to bounce off all of his Pop Off he laid around the arena like a trampoline in order to deflect the attack, which he proceeds to use to "accidentally" knock himself into Ashido's chest.
Y/n deflects barrage of projectiles Monoma sent towards him.
"Jeez, you're not even using those sword techniques of yours? Are you saving some of your strength for the special training?" Monoma asked, which Y/n did not respond.
"Hah. You're being careful that I might Brainwash you too."
"Water Breathing, First Form: Water Surface Slash."
(Mizu no kokyū, Ichi no kata: Minamo Giri)
Monoma uses Yanagi's Poltergeist to avoid Y/n's attack and rushes towards Midoriya and Uraraka. The Class A students saw Monoma attempts to activate One For All.
"Monoma! Wait! It's dangerous!" Midoriya tries to warn him.
"Too late!" But it doesn't appear to work, allowing to Y/n jump on him and swiftly pins him down.
"It's not your power Izuku! It's a bluff!" Y/n says.
"Aw man, it was a blank?" Monoma says, annoyed.
"Uraraka, take Monoma to the prison. I'm going to assist Ashido and Mineta." Y/n says. Uraraka nodded and holds Monoma down, allowng Y/n to leave them.
"Monoma! Shinsou tries to use his Capturing Weapon to rescue Monoma, but Midoriya, using Uraraka's Quirk to make him weightless, floats up to take him head-on.
Uraraka proceeds to drag the captured Monoma to their prison. After dropping him off, she prepares to rush over to help Midoriya, but then she remembers his favor, which is to go and help their team and leave Shinsou to him.
Shinsou uses his Capturing Weapon to swing across the arena, he looks back and was surprised when Midoriya catches up with him. 'He's fast! He'll catch me!'
"Fire." Just then, Monoma utilizes Twin Impact, causing Midoriya to get a stronger punch to the face, due to Monoma grazing him from earlier.
Shoda manages to grab ahold of Mineta.
"All right, if we've caught one, then the rest will be easy!" Yanagi says as she use her Quirk to shoot nuts and bolts at Ashido.
"Ashido! Oh, no!" Kirishima exclaimed fromt the viewing area.
"Nice, Shoda! Yanagi! You can do it! Turn the tables!" Kamakiri cheers for his classmates.
'Don't forget... Always remember!' Midoriya manages to quickly recover from the attack and grabs onto Shinsou's Capturing Weapon
Before they could proceed to bring Mineta and Ashido to the Prison, Y/n jumps in the air, throwing the bombs and lift both his nichirin blade.
"Sound Breathing.."
(Oto no kokyū)
The Class B team looks up as Y/n plummets down and hits the bombs with his nichirin blades, causing a large explosion.
"First Form: Roar!"
(Ichi no kata: Todoroki)
Dust covers the whole area, making the Class B to caught off guard. Uraraka emerges from the smoke, and knock Yanagi out with a chop to the back of her neck.
Before Kodai can retaliate, Uraraka pushes her toward a pipe with several Pop Off balls on it, forcing her stuck to it.
"Kodai! Yanagi!" Shoda exclaimed, Ashido then appears to rescue Mineta by punching Shoda out.
At the same time, Midoriya pins down Shinsou, reminding his team of the claim for a victory that he made before the match began.
Class 1-A's team manages to turn the battle around as soon Shoda, Yanagi and Shinsou have soon joined Monoma in the cell.
By turning things around at the last second, the Class 1-A team manages to win the match with a perfect 4-0 victory.
---
Tengen: I heard from the author that my boy Y/n is about to do something Flamboyant in the next chapter and I'm not missing it. The author is not here by the way, so I, the God of Festival, will be taking over! HA HA HA!
Author: Hey old man. Get out. You're not taking over my book.
Tengen: But you left.
Author: Yeah well it's not like I went to Spain. Get out-