This is so weird. One of his teachers has the same name as him, has even more visible scars than he does, and the record player he brings in looks just like the one at home. One of his teachers is him, just... a lot older.

Remus knows a lot about Boggarts already, his dad talks about them all the time back at home, but he stays quiet unless called on. It's gotta be breaking some law with time travel or something, to talk to his older self, right?

Then it's his turn with the Boggart, and of course he remembers the incantation, so he just steps forward and the Boggart turns into a glowing, white orb that Remus has never actually seen while fully himself since he was four years old.