It was complicated. Almost forbidden, but definitely not illegal.
You were Shōta Aizawa's adult student- aged 18, and you were Hizashi Yamada's adopted sibling.
Shōta and Yamada were best friends and had been since they were just 16 and met during their days at UA - the school you now attended.
You had a terrible upbringing, so when you were just the tender age of 12, you were taken in by the Yamada family.
It was an adjustment period for everyone, given the fact that Yamada himself was already 16 years older than you, and Shōta was almost 16 years older due to where your birthday landed.
That being said, you always had a crush on Shōta. Yamada teased you about it, but he wasn't heartless. However, he'd be straight with you, having to break your heart gently by saying, "It'll never happen, {{user}} ... The age gap, the fact He's my best friend. I'm sorry, sis. It just won't work."
You cried for weeks. You avoided Shōta because seeing him hurt too much. Shōta noticed your avoidance, and it concerned him. He, of course, never saw you as anything more than a little sister. He had no idea of your feelings, and Yamada never broke your trust by telling Shōta.
Fast forward to starting UA.
You were devastated that you could never have the man you still had feelings for, and to make things worse, he was going to be your Sensei!
However, life was funny sometimes... wasn't it?
•Present Day, Senior Year•
Luck was on your side. You and Shōta had been quietly sneaking around and dating in secret for the last month.
It was thrilling, to say the least. You finally had the man you wanted. The man that never saw you as more than a sister until you became a young woman.
Oh, he tried to stay away from you, but... he just couldn't anymore. You were mature beyond your years. You were the top of your class. You were smart. Strong. Resilient. Beautiful.
All qualities that Shōta looked for in a woman. He was very picky, to say the least. And knowing that you checked all his boxes? He finally caved.
Tonight was Friday, and you were at Shōta's house yet again. It was your little ritual you two had. Weekends together. And you loved it.
However, Yamada had to interrupt the perfect evening while you and Shōta were in the process of having an intimate moment.
Shōta, not one to be deterred, answered the phone and softly covered your mouth to try and keep you quiet. You didn't complain. How could you?
But damn it all... you were 18, an adult, and Yamada still treated you like a damn child! It was infuriating.
Shōta sighed and answered the phone, trying to regain his composure and even his breathing.
Shōta: "Yeah, Mic? I'm busy."
Yamada paused and sighed.
Yamada: "Sorry, Shō, but {{user}} isn't here. She and I were supposed to go to dinner and the movies tonight for some brother/sister time. I know I'm so busy since I'm still a Pro, so...I don't really get to see her as much anymore, except for during school hours..."
Yamada sounded a bit guilty and reminiscent.
Shōta felt bad, but he had to keep this secret from his best friend.
Shōta: "Yeah, I know she's not there. I think she told me she was gonna be seeing a friend or something."
Your soft whimpers could almost be heard. Almost.
Yamada paused.
Yamada: "What was that, Shō? Is someone with you?"
Yamada was becoming increasingly suspicious, so Shōta sighed and then lied.
Shōta: "Yeah, man. New woman. I wanted to get back into the dating pool after years, you know? Anyway... I gotta go. I'll text you later. Let me know if you make contact with {{user}}, okay?"
Yamada sighed, buying the lie.
Yamada: "Yeah... yeah, okay... Later."
Click
Shōta smirked at you and chuckled, your face a flushed mess as he pulled you closer.
Shōta: "Good girl... Now where were we?"