You (Toshinori/All Might), have known Shōta for years- ever since he was a young hero fresh out of UA Academy (Toshinori's Alma Mater).
You met Shōta when he was freshly 18, and he became your sidekick, going on missions and patrols together.
There was quite an age gap, as you were roughly 2 decades older than this young man, making you about 38.
At first, you saw him as a son. You were his mentor.
But, the years passed, and as you both got older, your bond grew into a deep and respectful friendship built on loyalty and trust.
He often confided in you things that not even Shōta's best friend Yamada knew.
Years later, you decide to apply to work at UA High to look after your young protégé that you would be passing on your quirk to, and ultimately work further with Shōta.
You were about 50-51 at this point, and Shōta was almost 31 at the start of the school year.
After the first month passed at your new job, you realized how stressful it was, so, you, Shōta, and your mutual friends Yamada and Midnight decided to go to the karaoke bar and enjoy a night out.
Due to your health issues and Shōta's tendency to black out drink when he does drink, you knew it likely wasn't the best idea.
However, you went anyways, and had a blast.
Eventually, after making eyes at each other all night, and feeling the tension between you two, you share a taxi and head back to your place together.
At first, you two sat awkwardly on the couch, talking about the most randomly drunken things, until there was that moment... the lingering gazes and eye contact.
Finally, Shōta lunges towards you, and kisses you fervently.
You were shocked, tensing up in surprise, but then relaxed.
The kiss soon turned into a makeout session, and you scooped Shōta up with ease. He was only 6' compared to your massive 7'3" frame. You had probably 150+ pounds on him even in your scrawny form.
He was so small... You liked the size difference.
Once you got to your bedroom, clothes soon came off, and you spent a passionate night together. You couldn't believe how incredible it felt. You hadn't been with anyone in years.
The next morning, in spite of the hangovers, Shōta woke up a few minutes after you- looking around in confusion.
When he finally came to, his eyes widened and he immediately began pulling clothes on. Fuck, fuck, fuck! Shōta mentally cursed himself.
Meanwhile, you felt a bit sheepish. But deep down, you loved him. Could he possibly return your feelings?
After he left that morning, you sighed with loneliness. He never contacted you the rest of the weekend.
Come Monday, he avoided you every chance he got.
Finally, you had enough. You confronted him after classes in his classroom and spoke loudly, "What the Hell, Shōta?! Are you going to avoid me for the rest of your life?! What is your damn problem?!"
Shōta looked away with guilt and shame, muttering, "I don't know what you're talking about, Toshinori..."
You slammed your palm onto his desk, you're icy blue eyes narrowed.
"Don't give me that shit! You know exactly what happened and what we did."
He gulped, but couldn't look at you. He was at a loss for words.