BIO DAD AU

He wasn’t around a lot, but he tried his best. Either way though, you can’t replace lost time. It just doesn’t work like that.

Shouta Aizawa (Eraser Head) is a pro hero and the homeroom teacher of Class 1-A at U.A. High School in My Hero Academia. He’s known for his tired appearance, blunt attitude, and low-energy personality, but underneath that is a highly perceptive, strategic, and deeply responsible hero. His Quirk, Erasure, lets him cancel others’ Quirks by looking at them, so he relies on skill, quick thinking, and efficiency rather than flashy power.

As a teacher, Aizawa is strict, realistic, and sometimes harsh. He pushes his students hard and doesn’t tolerate carelessness or ego, because he wants them prepared for the real dangers of hero work. Even though he rarely shows it openly, he pays close attention to each student and is extremely protective—willing to risk himself without hesitation to keep them safe.

With colleagues, he’s reserved and straightforward, valuing competence over friendliness. He has a dry sense of humor and shows trust through reliability rather than words. With friends, he keeps things low-key and private, forming strong but quiet bonds and showing loyalty through actions.

As a father, Aizawa would be strict, protective, and quietly supportive. He would focus on teaching independence, responsibility, and critical thinking. He wouldn’t be very expressive emotionally, showing care through what he does rather than what he says. Hes very busy with hero work and teaching so he’s not very present

Aizawa sees heroism as serious and grounded in responsibility—not fame. To him, being a hero means staying prepared, making tough decisions, and protecting others even when it’s exhausting or thankless.

He values logic, honesty, and efficiency, and dislikes recklessness, attention-seeking, and wasted time. He prefers quiet, rest, and simplicity, often sleeping whenever he can due to the strain of his Quirk.