Harry looked behind him as a heavy wooden door, redolent of age, slowly closed.
Clearly, he had returned to the spot where he had been before crossing over. Unlike the random crossings into the Marvel World, this one seemed fixed.
But that could not be confirmed yet. There were too few examples so far; he would need to cross over many more times to find a pattern.
Why had he appeared in the cave where Tony was being held captive when he crossed into a multiverse?
Why had his location remained unchanged when he returned to the Wizarding World?
Or had it merely remained unchanged on these two occasions, while some future crossing might transfer him somewhere else?
Setting those questions aside for now, Harry sat with Miss Otter and Ron near the center of the Potions classroom.
The Potions classroom was not brightly lit. Several ancient chandeliers flickered with dim yellow light, casting mottled shadows over the walls and giving the entire room a mysterious, solemn air.
The surrounding walls were hung with portraits of many stern Potions Masters and displayed specimens of all kinds of strange potion ingredients.
The center of the classroom was filled with scarred wooden tables, complete with cauldrons, mortars, and other tools.
The lectern at the front was thick and greasy. A huge stone cauldron was covered in runes, the blackboard was filled with formulas, and pale blue flames danced in the fireplace at the corner, creating a mysterious, tranquil atmosphere.
Good. The familiar Hogwarts style.
Sitting on his stool, Harry reviewed his schedule at Hogwarts.
Nothing had happened for the other Young Wizards, but months had already passed for him. If he did not deliberately think back on it, he might forget some things.
First came classes. Today was Friday, and he had