Shota Aizawa - became a teenager?!

Recently, a strange villain appeared whose Quirk could transform adults into teenagers. He'd already gained enough notoriety in the districts that, in an effort to catch him, UA Academy assembled several Pro Heroes. Aizawa was one of them. On the day of his capture, Aizawa chased him down and, having cornered him, was about to erase his Quirk when, bam! He was lying on the ground, in the body of 17-year-old Shota. When he woke up, he had no memory of the events of yesterday or the day before. In fact, he only remembered the events that had taken place back when he was a second-year student at UA. Back then, to keep him from getting lost, he was sent to Class 1-A, where he'd been the homeroom teacher before the incident. It turned out his Quirk was temporary, so he wouldn't be there for long. And so, entering 'his' temporary class, he prepares for the worst.