Mirai opened the door to her new dorm. It was pretty lackluster, but she was fine with that. Sitting on the bed, she reviewed what new Information she had.

Mazoku… this may be bigger than I first thought. Mirai sighed and took off her glasses, rubbing her eyes.

I'll have to wait for Aizawa to find more things out, until then I should focus on something else. Mirai put her glasses back on, and let her thoughts about other Issues consume her.

…

A small knock alerted Midoriya, he put down his weights and opened the door. On the other side was Mirai. Inviting her in, he took a seat on his bed while Mirai took his desk chair.

"I need help," Mirai said, pulling up her sleeves, she revealed the still bandaged wounds of her recent fight. "To explain I'll have to start from the beginning, around the time of our fight against the Hero Killer…"

As she explained everything, Midoriya took It well. At the end, she began to get to what she was gonna ask.

"This Mazoku guy, he's slippery. If he unleashes more Nomu like that, I'm not sure If any heroes will survive. I can't take him In alone, but I don't know any Heroes who might be able to take on a Nomu like that one." Mirai pointed to her wounds," These cuts were from that Nomu, It had a strange Aura around It."

Midoriya nodded," I never would've thought you were from a different world, although the hints were there. So you want my help with this, right?" Mirai nodded.

Midoriya continued," Why do you want my help specifically?" Mirai thought for a moment," I chose you because I think you have a special relationship with All Might."

Midoriya tensed up slightly as she went continued," There was this feeling I was getting when we were training at the training camp, and I felt something similar when I was fighting with All Might. I also heard about how you were quirkless from Bakugo. If you don't want to answer that's fine but, that's why I chose you."

Midoriya looked down for a moment, before meeting Mirai's gaze. "You're… Right. I do have a special relationship with him. He passed down his quirk to me, I'm his successor, Its called One for All".

"That's amazing, Midoriya. Ah, It's getting late. Aizawa picked up a lead, we may be able to catch him tomorrow. I'll make sure to inform him that you'll be coming with me."

"Good Night Midoriya," Mirai said, as she left his room.

…

The next day, the pair was crouched watching a seemingly empty warehouse. No one had entered or left since they arrived.

"I don't know how he's moving around so fast. However he does It, we still manage to track him down." Mirai commented.

Once they were sure the area was free of bystanders, they moved In. "remember the plan, If we can catch him by surprise, we won't have to waste weeks trying to find him again."

Midoriya nodded In agreement. When he was In position, Mirai entered the warehouse. Mazoku turned In surprise and sighed.

"God, you are persistent you know that." He said as Mirai approached him. Her sword taking form she addressed him. "What's your goal?" He clicked his tongue as he shook his head.

"Don't ask unnecessary questions!" He shouted, before pulling out a small handgun. Mirai immediately charged him. He fired two shots, Mirai dodged the first and deflected the second. She then swiped at him with her sword.

He gritted his teeth and dodged. As he did so, A green flash sprung down from the ceiling. Before he could see what It was, a kick slammed Into his back. He was launched Into the wall, as he looked up he saw Midoriya and Mirai standing before him.

"Should've known you wouldn't act alone." He said between coughs. Mirai reached for handcuffs, and he smirked. Realizing her mistake, she reached for him but was too late.

A circle surrounded Mazoku, and he began to laugh. "See you soon, Mirai!" He said before the portal then closed. Mirai gritted her teeth, and Midoriya was left speechless.

"What the hell was that?" Midoryia asked as Mirai updated Aizawa of the situation. "I don't know. It seems he's able to use portals. Anyway, we'll have to wait for Aizawa to get a lead. Until then, let's focus on our classes"

Midoryia nodded, and they began heading back to the dorms.

…

"Its time to talk more In-depth about work studies. You can come in." Aizawa said as the door to the classroom was swung open. From the door came three students. The students stared at them In awe.

One of them had blonde hair and a smile on his face. Another was looking to the floor, and the third was between the other two with a smile on her face. They Introduced themselves as Mirio Togata, Tamaki Amajiki, and Nejire Hado.

They each were given a turn to speak about Work Studies, soon It was Mirio's turn. He decided, to challenge the class to get his point across. They, understandably, were shocked.

…

At Gym Gamma Class 1-A Is assembled before Mirio, everyone Is prepping or the fight.

"You can come at me anytime, from anywhere," Mirio said, as Class 1-A prepared. "Who's first?" He added as he gazed around the room.

"Here I come!" Midoriya said as he stretched, before getting Into a lowered stance. Mirai held her hand out to her side, as she gazed at Midoriya. "Careful Midoriya." He nodded, and after a moment sparks emitted from his body.

"This is a good chance for all of you. Make sure you get the most out of this experience." Aizawa shouted from the sidelines. Mirio turned his gaze to Midoriya.

"Problem child! That's good, your really energetic!" He said as Midoriya took a deep breath.

"The close combat team should surround him all at once!" A student said as they all prepped their quirks.

Midoriya burst forward, dust trailing behind him. As he was beginning to move his leg, he stopped.

"Huh!" Mirai exclaimed as Mirio's clothes fell down. The other students were equally confused. Mirio hurriedly grabbed them. "Oh, excuse me. The fine-tuning's tricky!" He yelled as he pulled his clothes back up.

Seeing an opening, Midoriya regained his composure and kicked towards Mirio's head. Contrary to his previous tone, Mirio didn't flinch, as Midoriya's leg passed through him harmlessly.

Did it phase through? Mirai thought, as Midoriya flew past Mirio and skidded to a stop. "You went for the face, huh?" Mirio said nonchalantly as Aoyama's beam, Ashido's acid, and Sero's tape all passed through him harmlessly.

The three quirks collided with the nearby wall and kicked up dust. "Wait!" Iida exclaimed as the dust settled. "He's gone" Iida added In confusion.

"I'll start with the long-distance fighters!" The voice of Mirio alerted the Class, they turned around and saw him emerging behind them. His first target was Jiro, the class hurried to help.

"He warped?"

"His power Isn't just slipping through things?"

"What kind of strong quirk is that?!"

The class shouted, as their attacks continued to miss their mark. Mirai watched as the long-distance fighters were picked off one by one. What his the gimmick? Mirai thought

Tokoyami attempted to strike him, but Mirio had punched him In the gut seemingly Instantly. Sero attempted to counter-attack, but Mirio seemingly warped behind him and delivered a punch to him and the nearby Mineta's gut.

Gritting their teeth, Asui, Aoyama, and Ashido all attacked together. Once again, they were taken down seemingly Instantly with a punch to the gut. Soon, Yaoyorozu and Shoji were taken out as well.

"Midoriya, have you figured anything else out yet?" Mirai called out, as she prepared to form her sword. I'm the only one Mirio knows least about. She thought as Kaminari fell to Mirio. Midoriya can only watch, as almost half the class falls. "Only that he seems to become Intangible, but It also seems to be different than that?!"

"Power!" Mirio shouts as he stands Infront of his victims who are groaning In pain. "Now's as good a time as any," Mirai says, as she finally forms her sword.

"Mirio Togata… As far as I know, he's the man closest to being number one...Including the pros." Aizawa commentated, which only made the remaining students more uneasy. "He got more than half of them In an Instant… He's the man closest to being number one…" Todoroki commented as he watched the carnage.

"That's it for the long-distance fighters," Mirio said In satisfaction as he turned his gaze around. "All that's left are the ones who focus on close combat, right?" He finished as the remaining students stared In shock and awe.

"He's strong enough being able to slip through things, but he can even warp?" Uraraka said as they all watched Mirio wearily. Midoriya's face brightened a bit, Mirai turned to him expectantly.

"I think there's some kind of trick here! Whether he's applying his "slipping" power to warp or applying his warp power to slip through things, he's attacking us directly. So long as we go for the counter, there should be times when we can touch him! If we can't figure out what he's doing, then we'll have to figure out assumptions with what we do know, and do whatever we can to find a way to win!" Midoriya's Idea got a smile from Mirio

I wonder… If his quirk makes him Intangible In some way then… Mirai thought as she furrowed her brow.

"Then come and try to figure It out!" Mirio exclaimed as he began running towards the small group of students. Suddenly, he vanished Into the floor. Mirai quickly thought up scenarios, as did Midoriya. Getting a feeling, Midoriya turned around.

I was wrong?! Midoriya thought as he turned his gaze back to the group. Mirai gritted her teeth as she turned around quickly. Mirio had a look of surprise as she held up her sword. Forming a shield from its tip, she braced herself.

Mirio smirked as he continued his advance, Mirai smirked as well. I have no clue if this will work! She thought as Mirio threw his fist out towards the shield. With a clang, his fist hit the shield. His smirk slipped for a single moment, as Mirai realized her thought process was right.

Aizawa stared In disbelief himself, as the class realized what had occurred. Mirai didn't waste the oppurtunity, she split off a small kunai from her sword and swung at Mirio. He quickly regained his composure and twisted out of the way before warping into the ground.

Before Mirai could relax, he popped up from the ground behind her. This time he was faster and swung a fist Into her gut. Keeling over, Mirai clutched her stomach, as Mirio vanished Into the ground again.

Midoriya smirked. As he began turning behind him. "Maybe I was right!" He exclaimed as he threw a kick behind him. Mirio was surprised again, but this time he smiled. "But, here's an ultimate move!" He exclaimed as his arm warped into Midoriya's leg.

"Blinder Touch Eyeball Crush!"

His fingers aiming for his eyes, Midoriya instinctively closed them. Using that chance he contorted his body and reared up a fist. His fingers passing harmlessly through Midoriya, he swung his fist Into Midoriya's stomach.

The rest of class 1-A was finished off with ease. "Sorry, was that a little too hard?" Mirio asked as class 1-A groaned In pain. Mirio went on to explain his quirk, as well as how he got to where he was.

As Mirio turned his gaze to Mirai, she could tell what was coming, but Aizawa quickly Interjected. "So, now that you've all experienced this first hand, learn from it."

Mirai sighed as she and the rest of class 1-A practically limped in pain back to the lockers.

A/N: Boy was deciding whether Mirai could affect Mirio while he was using his quirk tough. This was my thought process, In case you were wondering:

While the systems of both worlds are different, which is why Aizawa can't erase Mirai's ability, there will be certain things that remain the same. One of these things Is Intangibility. While Mirio's Is induced by his quirk It is still, In essence, Intangibility.

Feel free to criticize me. I'm still very much on the fence about this, and I might've missed something that would determine if she could affect him.