Azkaban students at Hogwarts

Introduction: It is another school year, and several freshmen get together and whisper. "I heard from my cousin that that guy named Roman Heller is captured by Aurors every time school starts." "But this year he hasn't been here since school started!" "Maybe he was expelled!" "Maybe he's already I was imprisoned in Azkaban!" Several young wizards clapped their crowns to celebrate, not noticing the shadow behind them at all. "Maybe it's because - he has already been to Nurmengard during the holidays?" Roman smiled and left, leaving only a group of shivering freshmen.