It's ok, officer, he's a student! He's allowed to be here! And he's sure there are weirder things campus security has seen than a freshman just sitting on top of a table. Luckily, Ryoji has a tendency to look more... foolish than suspicious. Which is a nice help when he's doing actual suspicious things.

He doesn't recognize the girl when she approaches, but... there's no he can't talk to her! Ryoji gives her a little wave. "Hello!"