Aizawa was, unsurprisingly, not the type of person to gaze longingly at his Soulmark and conjure up whatever ideal image in his head for the face that carried his other half. In fact, he didn't give it any thought at all. About the same amount of wondering as he gave towards what his Soulmark was even supposed to be. The truth was, he was busy and complacent as an underground hero and teacher at UA.

Some people never even met their Soulmate. Aizawa was neutral on this subject.

And then, one random day, a day that Aizawa preferred to be huddled in bed... they just kinda appeared.

(insert scene- possible ideas could be meeting him in a villain attack, on the street, on UA campus, etc)