(***SPOILERS AHEAD***)

Izuku and Aizawa jogged towards the location Hitoshi pointed out as Y/n's room. They were hopping they wouldn't encounter any mishaps on their way there and boy were they wrong. Aizawa had to pull Izuku with his scarf a couple of times when he heard guards walking down the hallways. He chastised Izuku for not paying attention and gave a deep sigh to an apologetic Izuku.

"I'm sorry. I'm really nervous..." Izuku shook his clammy hands, he could feel the sweat even through his gloves.

Aizawa patted Izuku's unruly messy green hair. "Trust in your own strength. She won't be the first person you'll encounter like this. Besides, you've already done it... with Eri. You already have the good heart of a hero and you've done this before. I have no doubts in your capabilities, you just need to get out of your head. Alright?"

Izuku looked over at Aizawa with admiration. He would be lying if he didn't feel like Aizawa was a father to him like All-Might is too. Aizawa is always good at giving advice and pep talks, he truly was like a second father to class 3-A. Even if he did have his questionable moments.

"Thanks Dad..." Izuku's eyes bulged when he realized what tumbled out of his mouth. "I'm sorry... oh gosh... I swear... I swear, I didn't mean to make it come out... like that... you're just... you know like a father... n-n-not that it's a bad thing." He waved his hands frantically at Aizawa, who still had no expression after hearing him say that word. "I-I s-see you and All-Might... sorry I'll shut up now."

Izuku stopped his rambling. Covering his mouth with his gloved hand, in attempt to stop the word vomit from spilling out.

Aizawa sighed heavily and gave Izuku a rare smile. "I swear you and Hitoshi will be the death of me."

Izuku was about to say something when he got stopped by Aizawa's scarf again. They both stuck to the wall around the corner as they heard the same guards pass by again.

"Man, I'm getting tired of this job. Who can stay sane at hearing her scream like that?" A big man wearing black clothes complained to his companion.

"Not like we're any better. Duane and I did beat the shit out of her sister earlier. Though now, he's probably dead from interfering when he shouldn't have. It also pays good, so there's that..." The other guard replied unbothered.

At hearing this Izuku's blood ran hot with rage.

Where they really doing those experiments on her today of all days? And what did they do to Rosalinda, to Y/n's sister?

He felt deep guilt for waiting outside safe in the van, while this whole time they were in here suffering.

They thought if they jumped quick at the chance of saving her, she wouldn't have to go through another session. However, it was too late she already was in a session. Izuku looked over at Aizawa, who gave him a rough quick head shake, signaling they had to wait.

But Izuku was done waiting, and so was she.

How long has she been in that room?

Aizawa must have seen the resolve in Izuku's eyes and was too late to stop him.

Izuku jumped out of his grasp. Ripping Aizawa's scarf with ease, he launched at the unexpected guards, startling them. It wasn't usual for them to fight under here.

Before they could use their quirk, Izuku jumped at one fist at the ready and letting his quirk take over. The green electricity around his body surged on. Speed becoming his ally. He knew he didn't need to use one hundred percent. He only needed enough to knock one out and question the shit out of the other one before back-up arrived.

His eyes and hair illuminated green with the switch of his quirk, "Detroit SMASH!" He yelled out before hitting one guard across the jaw with his left fist.

With Izuku's gloved hand, making contact with the guard's jaw. He was out of commission in an instant. He only used nine percent of his power, but that was enough to knock the guard down.

Izuku used the speed momentum as he passed by the other guard like a flash of lighting and swung his body forward flipping in the air to connect with wall by using his feet. Bending at the knees, to stop him from becoming a splatter of flesh against the wall. Using the soles of his shoes he pushed against the wall the second he touched the wall.

Without giving his opponent any time to recover from the shock, he stretched out his right arm and let black whip from his quirk spill out through the holes in his gloved hand at full speed from his knuckles.

Dark luminescent tendrils shot out from his hand and got a hold of the guard trying to call for back-up, through his walkie-talkie. Crushing the device as it wrapped around it. Izuku also wrapped his tendrils around the guard's body only leaving his eyes and nose untouched. The whip tightening around the guard's body, like a snake. Barely giving him an inch to move.

The guard's eyes panicked in fear as he saw the menacing snarl of the green-eyed hero in front of him.

Izuku could barely contain his rage. He didn't care at this moment he almost seemed villainous, the storm ragging in his belly and the fire boiling in his veins was the only thing he could focus on.

Without realizing the whip around the man kept getting tighter and tighter, slowly suffocating the man.

How could he talk about her screams and torture so casually as though it's the weather? The freckled young man thought.

It enraged him more to think everyone in this damn facility knew what they were doing to her, and no one was trying to stop it. Some even joined in on the torturing part.

"How many years?" He growled out at the man as his whip kept tightening ever so slightly. The guard shook his head in fear. "Don't act dumb, how many years have you worked here?" He bit out aggressively, his eyes squinting menacingly at the man.

He let loose of the black hazy tendrils around the man's mouth and throat slightly giving him room to speak.

The oxygen deprived man, coughed out as his voice whispered hoarsely "S-s-sev-en." The man gave the information without hesitation.

His answer must not have satisfied Izuku because he felt the tendrils tighten to the point of suffocation around his writhing body. The man tried moving his hands to claw at Izuku's black whip but was unable to. Instead, his movements made him seem like a fish out of water.

"Kid, put him down..." Aizawa approached Izuku with a feather light voice, gently putting his hand on his shoulder.

However, Izuku wasn't listened to anything around him only the beating of his enraged thumping heart. He growled in response; eyes locked on the man he was suffocating.

"I know you're angry, but you are a hero... not a killer... Now. Put. Him. Down..." Aizawa's grip on Izuku's shoulder tightened.

Aizawa could use his quirk to cancel out Izuku's, but he wanted to give him the benefit of the doubt. He knew Izuku was not a killer, he was just angry. Angry for the girl whose been tortured for most of her life. He felt it too when he heard the guard's answer.

Hell, he even wanted to strangle the shit out of the guard himself. Sure, it wasn't his fault, but he was an accomplice by omission, and he also joined in on the 'fun'.

Who worked here for seven years, and did nothing to save the slaves here? Because that's what they were, slaves to those in charge. Do these people, not feel any remorse in knowing what they were doing to her all these years?

Izuku took a deep breath, railing in his dark emotions. His quirk slowly loosed on the guard, giving him space to breathe again. Izuku stretched and rolled his neck to the side, chewing on the inside of his cheek to control himself.

"Where is she? And don't tell me she's in her room so you can call for back-up. I know what you've been doing to her... And I know, you know who I am talking about." He bit out harshly at the guard.

Aizawa's hand on Izuku's shoulder loosed. He gave him a pat on the back, silently thanking the third year for listening to him. Taking a step behind him, he let him be in charge again. So, as long as he didn't lose his cool.

Aizawa took out a bottle of lubricating drops from his pocket and gave each eye the relief it needed. To stop his excessive blinking, he would need all the moisture he could get. Also, needing the drops to prepare himself for a battle that was sure to come.

"Go on, tell the kid what he wants to know." Aizawa coldly told the man, without giving him a second glance.

The guard hurriedly nodded and gave them directions to the medical ward. It didn't seem like it was far from their location, only a couple of turns. Once the guard stopped speaking Aizawa without missing a beat hit the guard's temple with his elbow and watched as he went limp in Izuku's grasp.

"I don't know what's been up with you, Todoroki and Bakugou lately, but you have to stay calm if you wish to continue..."

Izuku grabbed both bodies with his hazy black whip and dragged them to an industrial pole that was nearby. Remembering, even though he slipped up, technically he was still in charge of this part of the mission, and he had to stay calm to continue.

Izuku's eyes switched from menacing to his signature tender caring eyes. Horror and realization kicking in of what could have happened if Aizawa hadn't stopped him.

"I'm sorry, I don't know why but I've been feeling so angry lately... I don't know if it's because of Ochako or?" he thought of Y/n, then shook his head...

But what if?

Aizawa crouched down behind the guards and zip tied their hands to the post securing them for the meantime. "Or what kid? Remember, I'm here to help you."

Izuku nodded slowly at him, "I'm not sure what's been happening, but I've noticed the closer we get to Y/n's location the more my emotions become less mine..."

Aizawa motioned for Izuku to run and talk at the same time. Having to stop and hide a couple of times as they saw other people walking their way.

"It's natural to feel angry..." Aizawa pushed Izuku behind him, sheltering him to dark a corner, so they would go unnoticed.

When the coast was clear again, they continued to their destination.

"No, that's not what I mean. I have a theory. This is going to sound crazy, but quirks are hard to explain. Well, there's no consistency with them..." Izuku rambled to explain himself properly as he ran side by side with Aizawa.

Aizawa massaged his temple from irritation, "Spit it out kid..."

Izuku squeaked then cleared his throat to continue, almost tripping on a rock as he ran and talked. "R-r-right! I think she connected herself with the three of us, me, Shouto and Kacchan by using her telepathy quirk. Technically speaking, we have a direct connection to her emotions and thoughts. We can feel some of her anger, even if we're not physically with her."

Aizawa's dark eyes widened from the possibility of this being true.

"Shouto is always calm, anything that is not related to his father rarely upsets him. Recently I've noticed him snap more than usual, and at little things that would normally not bother him. Kacchan... Well, he's Kacchan... but still he's calmed down a lot than how he used to be when he was younger."

Izuku side eyed his sensei to make sure he was catching on to what he was insinuating, which he was.

"After Kacchan disappeared that day to talk with Y/n. I felt unimaginable sadness, my heart ached, even if I wasn't speaking with her. I still didn't know how sad she was back then. But after Kacchan explained everything after their talk, I started to connect some things and all my roller-coaster of emotions started to make more sense."

Izuku glanced at Aizawa, making sure he understood him.

A lone guard was walking by, and in their haste to get to the location quickly. They failed to notice him, but the guard saw them and instantly grabbed his gun from his holster. Ready to shoot at them and alert everyone down there, that there were intruders.

Before he could fire off though, Izuku ran at him at one hundred percent of his quirk, knocking him out. Only making sure to lightly tap him because of the speed he was using, then tying his hands when subdued. Pushing his body to a dark area where no light illuminated from the ceiling.

Then continued running by Aizawa as if nothing happened.

"Go on..." Aizawa nodded approvingly at him.

"For me... after she connected with me. I felt lonely after she left, Shouto mentioned he felt the same thing when we first met her and I'm thinking. What if it was her loneliness we felt? And not something we felt ourselves, like we first thought it was. The feeling of loneliness after we left her to have her come back to this."

He gestured around him, looking around at the same time to make sure no one else got the jump on them again.

"It makes sense, who wouldn't feel helpless and lonely. At first, I thought it was an after effect of her quirk. But it's not. I don't think she knows if she connects with someone through her telepathic quirk, it could be for an extended period. Right now, I wanted to... t-to hurt... that man... I recognized him somehow, even if I've never seen him before in my life. All I could think about, was that I wanted to k-kill... him. And then he mentioned he hurt Rosalinda, her sister. What if I was feeling Y/n's rage?"

"Did you ever feel any other emotion while at school?" Aizawa felt a slight panic.

What would this mean for the four of them in the future?

Izuku looked down ashamed, for not bringing this up earlier. "Yeah, the break-up with Ochako, still hurts, but after I met Y/n. I've felt an incredible chest ache I've never experienced before. I don't think I'm feeling this way just because of the break-up. I don't know how to explain it, but all I feel is pain. She's hurting. A lot."

Izuku's green eyes shone with tears at the thought of everything she's endured.

"I can tell the difference from her emotions to mine now that I know. I can tolerate the pain because of experience... but I don't know how Kacchan and Shouto have been managing. I didn't want to bring it up to them until I was sure of all of this first. The day Sero went on his part of the mission, it didn't ache as much... I felt something like hope...That's when I knew."

"You may be right. You're very perceptive and you're rarely wrong. It might have been an after effect from using her quirk. Who knows? Since her original quirk was altered, everything she does might be different than what we know from regular telepathic quirk users. We won't know until we can confirm your theory. For now, it's going to have to wait. If it gets to be too much, let me know and I will take over."

Izuku gave him a small smile. "I promise to tell you if I can't control my emotions, thank you Aizawa sensei."

"Anytime, kid." Aizawa nodded at his student, as they both made their way to Y/n's location.

It was strange but the closer they got to her location the more the expressions of the people they encountered changed from unbothered to frightened, and they knew why.

It meant; she was still being experimented on.

They didn't have many guards up in the top floor, and they were lucky the infiltration from upstairs has gone unnoticed so far. The club's owner probably never thought they would get caught, so they didn't see much in getting a proper protocol if there were to be an infiltrated.

U.A High was different though. They did have an escape plan, there are even underground tunnels that connect to other hero schools. Incase anything happens they're prepared. But this place seemed lacking in that department.

They stopped and hid one more time behind the corner of a wall before turning and when they saw a couple of nurses this time walking by with buckets of what looked like... blood. Izuku's eyes widen and so did Aizawa's. They knew they tortured Y/n, but to also take her blood and that much?

Then they heard a high-pitched scream...

Without a second thought, they both ran towards it. Making sure to knock out the nurses who held the buckets of blood first and tying them against each other. Aizawa made a mental note to come back for those buckets. They were doing something with her blood, and he was going to make sure it didn't happen.

They pushed the double grey doors open, of what looked like a surgery room. Startling a nurse who had a camera in her hand and a doctor in what was supposed to be a white coat, painted in red and brown from the drying parts of blood.

Izuku knew right away who this doctor was, he's seen him many times before.

When he was little and was told he was quirkless...

With the villain this doctor followed like a god, working by his side like a minion.

A minion for his archenemy.

All-For-One...

"Well would you look at that dear Y/n, we have new visitors." Kyudai Garaki grinned at the hero duo, with blood dripping down his face. "It's been a while, Izuku Midoriya."