For Hogwarts, in most cases, a student being absent for three or four days in a row should not have caused much of a stir.
This was especially true during the period when fifth-year students had just finished their O.W.L. Exams, seventh-years had just completed their N.E.W.T. Exams, and students in all other years had begun revising.
Whether they were preparing for the upcoming Year Exams or celebrating the end of the O.W.L. and N.E.W.T. Exams, students had far too many things to do.
For example, they might become so anxious while revising that they accidentally ruined a cauldron of potion and had to spend several days recovering in the Hospital Wing.
Or, with the N.E.W.T. Exams over, they might be forced to confront the reality of graduation and consider their future prospects, choosing to leave Hogwarts in search of work.
All of those situations were perfectly normal. But for Hogwarts as it was now, Vizet's absence was not one of them.
The first to notice something was amiss were naturally the Ravenclaw Students, since Vizet was one of their own.
Although Vizet often cast a Confundus Charm on himself to reduce his presence as much as possible and avoid unnecessary attention, that did not happen in the Ravenclaw Common Room.
The Ravenclaw students were accustomed to asking Vizet questions.
So long as the questions concerned magical subjects, under Vizet's guidance, they could almost always find answers that left a deep impression on them. That was why they enjoyed seeking his advice.
If they went to the library and tried to find answers among its collection of books, they would often get only one result.
But when they asked Vizet, they gained not only an answer, but also a direction for thinking about magic that helped them remember the question