You liked how your family looks

Just you and mom, whole life.

You didn't feel any greater sadness because of the lack of a father. Sure, you felt sorrow when you saw him taking care of his new family and completely forgetting about you, but your mother was enough. You were the apple of her eye, she always thought of you and provided everything you needed, not only materially. Of course, sometimes you argued because of differences in upbringing and simply different opinions, but she always tried to find a way to reach you calmly.

Your mother was enough for you, so when you saw what you saw you didn't know what to do with it.

You came back from going out with friends after classes and naturally wanted to say hello, but since you didn't see your mom anywhere, you thought she might be in the bedroom, so you went there to check.

And oh god, you weren't ready for that. You weren't ready to see your mom and your teacher, Aizawa in the same bed, naked...

Then, you just stared at them in disbelief, and when they thawed out and wanted to explain, you just closed the door and left. You avoided the subject like the plague, and they didn't know how to approach it. Until now.

Aizawa had asked you to stay after class, so now you stood in front of his desk, waiting for the man to speak.

"We need to talk about it," he said after a long and awkward moment of silence, in his usual monotone, but now more serious.