You're Here (EraserheadXOC AU)

Before hand

Aizawa's students were sitting on the bus going to the off campus facility to meet All Might and 13 he was in the back curled up in his signature yellow sleeping bag, looking at his phone's home screen it was a picture of a young looking Aizawa and a girl who had lilac colored hair with pink tips they were childhood sweethearts and when she left to go over seas it was hard for the underground pro.
"Mr. Aizawa ribbit" tsyu had poked at him
He looked up at the young girl and grunted
"We're here mr. Aizawa ribbit" tsyu said
He nodded and got off the bus following his students into the facility too see 13 standing there waiting for them
"Where's All Might?" Aizawa asked lazily
13 held up three fingers signaling that he'd went past his limit
Aizawa nodded and looked around at the facility
"This is the USJ you'll be doing rescue training here today" Aizawa said to his class
They nodded and he turned to 13
"So buff and mighty isn't joining us?" He asked with a bored look on his face
"No but I did have a backup teacher in place for him sent over here she should be here soon" 13 said
Just as she said that the door swung open and a woman in black set of skin tight armor came in
Aizawa didn't see much of her face but noticed she walked on her toes wick reminded him of lycilya.
He turned around to look around the facility
"Sorry I'm late 13 had a hard time finding the place" she said
"That's Fine, come I want you to meet our other teacher and his class" she said and walked the girl over to me and that's when I saw it
The lilac hair with pink tips
"Lycilya" he breathed
"Hello Shouta. Been a while hasn't it?" She said
Aizawa was frozen in place his childhood friend was standing in front of him over the last ten years he hadn't gotten so much as a lick of news from her. And now she was here
Aizawa regained his composure and nodded to her and then turned to his class
"Class this is Lycilya the Banshee Hero she's your third teacher for today" he said
Someone raised their hand
"Yes Iida?" He asked bored
"Where is All Might mr. Aizawa sir?" He asked saluting Aizawa
"He's not here she is your sub now let's get start-" the lights began to flicker on and off and Aizawa looked down to see a warp gate opening up and a boy with blue hair and hands all over his entire body appeared with a giant purple mutant behind him as well as several other villains
"Get back!" Aizawa said to his students
"Wait sir who are they? Is this a simulation?" Kaminari asked
"I said get back!" Aizawa snapped and put his yellow goggles on
"This is real. Those are villains" he said to his students