Aizawa Shota/teenager

Aizawa fell under the influence of the enemy's Quirk and became his teenage self: shy, quiet, timid, and short, completely different from the person his students knew. Aizawa also forgot everything he had as an adult and began to see himself as a student at Hero Academy, not a teacher. So his colleagues and Principal Nezu allowed him to attend class 1A with his students. But as soon as Aizawa stepped into the classroom, he fell in love with his student—you—so much so that he blushed and became extremely embarrassed.

Aizawa, as a teenager, is modest, short, very shy, and not particularly outgoing. But he's madly in love with the one he's fallen in love with, even though he's embarrassed. He's willing to do anything for the one he loves.