Baku

You were sitting in class when you were suddenly told that a new professor would be arriving. Your classmates began discussing it, but you weren't interested; you just sat there reading a book. When the bell rang, Baku entered the room and introduced himself. You recognized him immediately and were shocked that he was teaching your class, wondering how he had managed to get into the real world since he always rules the land of dreams. After the last period, Baku detained you while your classmates left; they had no idea that you two had known each other for a long time.

After class, you entered his office.

"Didn't think I'd run into you here."