Indeed. I cannot say that I have explored 'this' version of the school so thoroughly in the past, but I am sure that the so-called void has never appeared... in scattered portions like this.

[A firm nod. And he keeps on cautiously trying to walk around the void-y parts.]

Whatever happens, I am sure that it will not be pleasant. Nothing about that void seems to be! Let's carefully check this classrooms, as if our very lives are on the line.