---
"I will become your hero!"
Disgusted, Overhaul wipes dirt from his face, "Come back, Eri. Killed? How many times do I have to tell you? You break people. That's how you were born."
"No.. You shouldn't..." Eri tries tell Togata to run away. However, Togata tells her to not listen to Chisaki's words.
Overhaul becomes annoyed that Eri's selfishness has caused him the need to get his hands dirty and mocks Eri for her existence being a curse.
"How can you say that to your own child?!" Togata asked.
"Huh? Oh, I see. That's the story I told you... I don't have any children."
Overhaul activates his Quirk, crumbling the entire cave floor, it quickly reassembles the floor into a bed of spikes that collide into each other in an attempt to crush Togata and Eri.
"He didn't care that she was here."
Overhaul launches more spikes at Togata without any worry about Eri's safety since he can just "repair" her easily and reveals to Togata that Eri has experienced it firsthand.
Overhaul's words enrage Togata but he's forced to keep dodging to keep Eri out of danger.
"What'll you do if Eri gets injured? Under these conditions, I'm the only one who can heal her." Overhaul sealed off any means of escape.
Chronostasis recovers and threatens to shoot Togata. He targets Togata's arm that's cradling Eri while Overhaul erases his cover. Lemillion cloaks them both in his cape which throws off Chronostasis's aim.
Lemillion takes Chronostasis by surprise and disarms Chronostasis, but the villain gets away unharmed after Overhaul extends the platform he was sitting on.
Overhaul moves to destroy her to ruin his morale.
"That's the kind of guy you are, right?" Lemillion phases a strong right hook through Overhaul's defending hand and lands a direct hit to the villain's face. "A hero puts on his cape to cloak tormented little girl's in its comfort!"
He admits Overhaul is strong but overpowers him with and reveals that he's even stronger.
Determined to reunite with Overhaul, Nemoto drags his defeated body to the site of the skirmish.
"Master!"
"Wh-? I thought I knocked him out completely!"
"Nemoto! Shoot!" Overhaul opens a hole for Nemoto to enter and orders him to take the gun and the perfected Quirk Erasing Bullets.
He knows he can't waste a shot and that Lemillion will be able to avoid it.
Instead, he shoots the bullet at Eri. She prepares to take the pain as she always has, but Lemillion is determined to rescue her from that despair.
'I won't make you sad anymore!' Togata lunges himself in the path of the bullet and sacrifices his amazing Quirk for Eri with a smile.
Overhaul taunts Togata for being a diseased man with foolish dreams that are lost now.
"Thinking you can actually become something is an illness of the mind. It's funny! With the power of that girl you've come here to save, everything you've worked to cultivate.. has now gone to waste!"
Suddenly, Togata launches Chronostasis's unconscious body at Overhaul to cover his advance. He delivers a strong punch that hurts Overhaul's defending arm
Despite Togata being under Sakaki's Quirk,
in spite of losing his own Quirk,
Lemillion fights on to protect the girl.
For one-third of their bout, Lemillion protected Eri from Overhaul without the use of his powers, proving he's a true hero!
"Did you want to become a hero that badly? To save Eri that badly, Lemillion? It's all a filthy disease of our time. I'll fix guys like you with Eri's power."
"Chisaki!" Togata yells out.
"I thought I told you I threw that name away!" Overhaul tries to attack again, A figure rushes and destroys the spikes.
Overhaul was surprised by the arrival of Y/n who stood protectively in front of Togata and Eri.
"I'm sorry I'm late, Lemillion. You did an amazing job. Sir Nighteye and the others will be here soon." Y/n stated.
"Hashira.. Thanks..." Togata muttered.
"Hashira?" Eri asked before she look at Y/n.
"How did- What are those League of villains doing?! They were suppose to keep him away!" Overhaul says abruptly. "Doesn't matter. I'll just kill you and Lemillion. You hear me Eri? These two are going to die because of you!"
Y/n glared intensely at Overhaul who attacks with dozens of spikes towards Y/n.
"Total Concentration.. Water Breathing, Eleventh Form)
(Zen Shūchū, Mizu no kokyū, Jū Ichi no kata)
"Dead Calm."
(Nagi)
Overhaul's assault didn't reach the swordsman as all of it were shredded by Y/n's technique.
Y/n dashes forward, dodging another wave of spikes as he quickly slashes back at Overhaul, knocking him away.
"Arrgh! Don't you dare come near me again!"
The Hassaikai leader surrounds them, including Eri and Lemillion with spikes again, making it seems there's no escape in this attack.
"Third Form: Flowing Dance!"
(San no kata: Ryūryū Mai)
Y/n's nichirin blade covers in water before he swings and bends his blade in a winding motion, he easily severed Overhaul's attack that surrounds them.
"First Form: Water Surface Slash!"
(Ichi no kata: Minamo Giri)
Overhaul a wall to defend himself as Y/n sprint towards him and unleash a barrage of his slashes, destroying the walls.
Y/n strikes Overhaul who tries to counter only to get deflected before getting driven back. Overhaul falls to one knee then dodge as Y/n comes down from above.
Eventually, Y/n throws a small explosive at Overhaul and then knocks him down.
Suddenly a bullet travel towards the swordsman which he instinctly dodge it. Y/n saw the one who fired is Nemoto.
"I won't let you..! Get in Overhaul's way!" Nemoto who got out of the skirmish and continue to fire at Y/n.
Y/n sheathed back his blade blade he rushes while dodging the bullets, he knocks Nemoto into the air and then leaps after him. Y/n quickly maneuvers himself to slam Nemoto into the ground.
While Y/n is distracted, Overhaul creates a wall to block Y/n away from Eri and Lemillion then proceed to harm them.
"Now, he won't be able to protect you!" The two brace themselves as the spikes approaches towards them.
However, Y/n bursts through the wall and inserts himself between the two and Overhaul's attack.
"Eighth Form: Waterfall Basin!"
(Hachi no kata: Takitsubo)
Y/n swung his nichirin blade downward, ceasing Overhaul's attack which made the assailant annoyed.
"Please.. Stop... L-Lemillion lost his... Quirk.. Because of.. Me.. I don't want you to lose yours as well.." Eri uttered in fear.
'Togata-san lost his Quirk? Then the bullet they used must be the complete one that destroys Quirk.' Y/n thought to himself.
"That's right. You tell them, Eri. People die because of you, so it's better to get yourself hurt."
Y/n glances at the frightened girl, before he turn back to Overhaul.
"To think you're blaming the girl for your dirty works and I let her return to go through those horrible things.. How could this be? I'm ashamed as a Hashira." Y/n stated as he walk forward.
"If only I could crawl.." He lift his blade while emitting some flaming aura. Overhaul charges with spikes again.
"..under a rock!"
Y/n dashes towards Overhaul as he sliced his spike assault.
"Flame Breathing, First Form: Unknowing Fire!"
(Honō no kokyū, Ichi no kata: Shiranui)
Suddenly, Overhaul was surprised when the swordsman appears in front of him. He creates a wall before he ducks down, barely dodges Y/n's slash, the wall he created got sliced as well.
"You must be completely scared of Lemillion that you decided to destroy his Quirk." Y/n stated before he kneed Overhaul in the face, sending him away.
"Mist Breathing.."
(Kasumi no kokyū)
Overhaul quickly recovers, he notices the mist surrounds the area and tries to locate Y/n or Eri and Lemillion, but the cloud is effective at screening Y/n's movements as the latter quickly circle him.
"Fifth Form: Sea of Clouds and Haze."
(Go no kata: Kaun no Umi)
Y/n dashes forward at high speed and unleashes a flurry of slashes, it destroys multiple spikes at once. This shocks Overhaul as he continue his assault.
Some of the spikes manage to graze Y/n's left cheek-bone. He then delivers a swift blow to Overhaul but stopped when he felt a stab on his back shoulder.
"Hashira!" Lemillion yelled. 'I thought I completely knocked him out as well.' He thought as he watched Chronostassis struck Y/n from his head, leaving a tear on his haori.
"Those pierced by the long hand will have their movements slowed." Chronostassis stated but was shocked to see Y/n's movement didn't slowed. "What? But how?!"
"My demon slayer uniform is highly durable, also how dare you tear my haori." Y/n coldly glare at Chronostassis.
"Thunder Breathing.."
(Kaminari no kokyū)
Before Overhaul's attack could reach Y/n, the latter dashed backwards at blinding speed.
"What the- He's fast!" Chronostassis exclaims as he watch Y/n dashes around the surrounding area with lightning-speed. "What the hell is he?!"
"First Form: Thunderclap and Flash."
(Ichi no kata: Hekireki Issen)
Y/n dashes and slashing Overhaul extremely quickly each time he passes him.
"So these are the skills of the swordsman from Class 1-A. It's amazing." Lemillion muttered as Eri tried to follow Y/n's movements.
Suddenly, Midoriya smashes the wall and they come running through.
He sees Overhaul and delivers a punch to his arm. Midoriya's enhanced punch sends Overhaul flying back, only for Y/n to land on him from above, cracking the very ground underneath.
Y/n and Midoriya jump back and get ready to fight again. Aizawa tells Sir Nighteye to secure Eri.
Sir Nighteye is amazed that Togata and Y/n has been fighting all by themselves against the boss of the Shie Hassaikai and his closest aides.
"Mirio!"
"Eri is.. behind... me.." Sir Nighteye grabs hold of Mirio and Eri. A proud Sir Nighteye praises and congratulates Mirio for everything that he has done.
Midoriya, Y/n and Aizawa charge at the injured Overhaul, he tries using his Quirk but to no avail as Aizawa disabled it with his Quirk.
"You and Lemillion conered him this far! Keep pressing him!"
"Yes sir!"
Y/n notices something approaching them, "Eraser Head! Deku! Look out!"
Aizawa pushed Midoriya aside as his shoulder is struck by a minute hand that is emanating from Chronostasis' head.
"I-I can't stop myself from blinking..." Aizawa is forced to blink due to the cut from Chronostasis.
"Chisaki!" Midoriya continue to charge towards Overhaul.
"It's all for nothing!" Overhaul constructs massive spikes from the ground as Y/n pulled Midoriya back to avoid it.
"Like I'd let my plan be ruined by people like this! Right, Nemoto? You don't want that, do you?" Overhaul approaches him, thanking Nemoto for everything he has done for him and knows full well that he will gladly die for his sake.
---
Y/n glances around and saw Chronostasis has captured Aizawa, leaving the fight.
"Izuku, I'm going after the guy who took sensei. Will you be fine alone until I get back?" Y/n asked.
"Yeah. Go save Aizawa-sensei." Izuku nodded before Y/n leaves Izuku and follows Chronostasis through the hallway.
When he saw a figure in the distance, Y/n accelerate to incredibly speeds, determined to stop the Chronostasis and save his teacher.
The Hassaikai member stabbed Aizawa with a short hand that will last for an hour. Chronostasis glances back, his eyes widened when Y/n thwarts his attack and attempt to slash him,
This forces Chronostasis to jump away, stunned by what happened.
"Give my teacher back. Where are you even taking him?" Y/n coldly asked.
"We know all about him because his Erasure Quirk was a great reference during our research on Eri. That means he's worth keeping alive. To Kai, Erasing Quirks are attractive power."
Y/n narrowed his gaze at him, "Don't tell me that you're going to use my teacher to make those bullets? Like what you did to Eri-chan.. People like you.. Make me mad."
Chronostasis felt a tremendous dominance from Y/n, he knew he won't stand a chance against him.
Thinking that the finished product and serum is more important than Aizawa's Quirk. Chronostasis takes out a short blade, prepares to execute Aizawa and escape.
'For Hassaikai! For Kai!'
Y/n instantly rushes forward, causing Chrono shocked as Y/n rushes past him, slashing chest in a flash of light. The Hassaikai member collapses on the ground having been knocked out.
"I'm not letting anyone hurt the people who mean a lot to me." Y/n uttered before he went to Aizawa, leaning him to the wall and remove the blindfold.
"Sensei, are you all right?"
"Yeah. But I can't move fast because of that guy's Quirk." Aizawa replies.
"I'm glad you're alright. Stay here for a while until this guy's Quirk worn off. I'm going to help Sir and the others." Y/n says before he stand up and race back to the battle.
---
Overhaul charges towards Sir Nighteye and attacks him reconstructed spikes.
Y/n who returned on the fight, slashed Overhaul's assault before it could reach them.
"Let's go Deku!" Y/n and Midoriya move forward to Overhaul.
The young swordsman propel himself towards Overhaul, passing through and slicing the monstrous arm, while Midoriya does the same by punching the other.
The duo switch back and forth repeatedly, slashing and punching at the Overhaul with each pass.
Overhaul tries to grab Y/n, but he jumps upwards and dodges. Y/n strike down slicing off Overhaul's left arm.
"Arrghh! You annoying brat!"
Midoriya appears above and throws a column of rock at Overhaul, who destroys it with ease.
Y/n appears on the other side and prepares to unleash a technique but Overhaul reconstructed the broken pieces into sharp stones at him and Midoriya.
The two UA students proceeds to smash Overhaul's constructed sharp stones into pieces.
Suddenly, Overhaul is hit by one of Sir Nighteye's hyper-density seals but manages to block it.
"I will be his opponent! You two go to Lemillion and Eri!" Sir Nighteye says as Midoriya goes to Togata and Eri's location while Y/n became conflicted over helping Sir Nighteye or go with Eri and the others.
"Just go Hashira!" Y/n hesitated but nodded and went to Eri.
"Eri-chan! Lemillion! Are you all right? Can you move?" Midoriya asked.
"Yeah.. No problem... right? I ended up... making you sad.." Togata weakly respond. Y/n noticed the girl is trembling.
"Eri-chan.. Are you all right?" Y/n asked. Eri continue to tremble, unable to speak. Y/n takes off his mismatched haori and puts it on the girl, who stopped trembling. "It'll be fine now. You're going to be okay."
"All right. Let's get out of here."
Midoriya smashes open the wall which reveals the path he along with Aizawa and Sir Nighteye took to get here. Y/n carries Togata and Eri into the pathway.
"We should put some distance between us and Chisaki!"
"..I'm sorry... I'm sorry.." Eri uttered while Y/n and Togata looks back to see Sir Nighteye.
Sir Nighteye was impaled by Overhaul's reconstructed rock spikes.
"Sir!"
Sir Nighteye held onto a sliver of hope that Eri would be saved, the boys safe and Overhaul defeated as well as imprisoned.
"That future..!"
Y/n is horrified at Sir Nighteye's terrible condition, which making him remember his battle with Akaza.
Overhaul launches rock spikes as Midoriya stomps on the ground using his enhanced might, preventing Overhaul from reconstructing the ground.
"His power is nothing like it was before... Was he not fighting seriously earlier?!" Overhaul exclaimed.
"Lemillion, please take care of Eri-chan!" Midoriya turn to Y/n. "Y/- Hashira! We're stopping Chisaki right now!" Y/n nodded at him before he unsheathed his blade.
"One for All 20%!" Midoriya charges up his power as Y/n readies his blade and assumes a stance.
"Give it up! It'll just end up like I said. You'll all die!" Overhaul berates.
"We won't let that happen! Even if that was already decided.. We'll twist that future!" Using One For All 20%, Midoriya charges at Overhaul.
"Impertinent!" Overhaul launches rock columns at Midoriya and while he is able to dodge the first two.
Y/n slashes the third pillar before it could hit Midoriya. The latter cracks the ground beneath him to make it more difficult for Overhaul to disassemble and reassemble the ground.
Overhaul attacks the two young heroes with smaller rock columns. However, Midoriya both jump into the air and decides to finish the battle with a single blow to Overhaul's head in order to knock him out unconscious.
"Manchester Smash!""
Attempting hit Overhaul with their assault, However, Overhaul dodges his kick.
"No matter how fast you are, compared to those two and Hashira, the lines of your movements are simple and easy to predict."
He manipulates two pieces of debris and wedges them into Midoriya.
"Deku!"
---