A couple of weeks had gone by without incident since the revelation that Y/N was quirkless. Of course, Aizawa and Y/N still had their rivalry, however it was now more civil than before. Aizawa was beginning to let her in, let his walls down. Every so often he would come into her apartment after dropping her off, to discuss lesson plans and the like. Their agreement for a week of free rides had ended, however when she waved him goodbye and walked past his car the following week, he opened the passenger door for her to enter, not mentioning that their arrangement was over. He kept the snooping to a minimum, but he was slowly learning more and more about her from information she was volunteering without any threat or fear. For example, her favourite colour was pink, which took Aizawa by surprise. She was a cat person, not a dog person. She liked metal music. She also had insomnia (that one came as no surprise).
Until this peace was disturbed by feelings of betrayal.
"Hey." Y/N called from next to Present Mic. She had walked into 3-B during morning homeroom, needing to ask Mic something. She had gotten next to him without noticing. This gave her déjà vu, once again in 3-B scaring Present Mic- although this time unintentionally. Luckily, Aizawa had no shitty comments about her leaving their own homeroom early.
"Holy shit Y/N! How-" He suddenly froze, narrowing his eyes. A metaphorical lightbulb went off in his head. She had inadvertently unlocked a memory for Hizashi- a happier Y/N scaring the ever-loving shit out of him in this very room, whilst he sat in this very chair.
"Never mind. What's up?" He tried to regain his composure.
"Just wanted to let everyone know we're meeting up in Ground Beta instead of Gym Gamma for our lesson next period." She turned to the class.
"That's all. Thanks Mic." She turned to leave, the door shutting behind her, leaving Mic with an epiphany.
As soon as the bell rang, he gathered his stuff and bolted for 1-A.
The underground hero had spent homeroom using the Moogle™ search engine to look up Hawks and any potential pro-hero girlfriends, in an effort to find out Y/N's hero name. All that had come up was multiple articles titled "HAWKS' MYSTERY GIRL?" with various women. He did manage to find one, however, from 2 years ago that managed to capture the back of Y/N's head in a very blurry image. Eventually, he stumbled across a video titled "Hawks discusses secret girlfriend!". It was a clip from an interview, talking about how his girlfriend doesn't want to be in the spotlight, or be hounded by any of his fangirls, so they keep her identity a secret. At least Hawks had the decency to make sure Y/N could still have the quieter career she wanted. But when the bell had rung, Aizawa had packed up his things, closing his research and leaving.
"Aizawa!!" He grabbed his friend by the shoulders. 1-A filed out of the class. Mic shoved the confused looking Aizawa back into his classroom.
"I remembered her quirk!" Mic grinned like a madman, shaking his friend by the shoulders. Aizawa tilted his head.
"Huh? L/N? She told me she's quirkless." Hizashi let go, his face contorting.
"What? No, she totally has one." Hizashi asserted.
"Are you sure?"
"Yes! She scared the shit out of me today and it made me remember!" Mic walked over to a student desk and perched on top of it. Aizawa's brows furrowed in thought.
"Did... she sneak up on you?" Aizawa turned to Mic.
"Yes! Exactly! She always used to do it when she was a student, she and her friends found it very funny. Almost sent me to an early grave with a heart attack..." He shuddered.

YOU ARE READING
Those who can, do. Those who can't, teach. (OC/Reader x Aizawa)
FanfictionY/N L/N is a 23 year old semi-retired pro-hero, after waking up after a fight and having her quirk mysteriously disappear. She finds a job listing for a teacher at U.A., and decides to apply, not predicting the level of assholery one of her co-worke...