Harold was worried. He was standing outside his final hour classroom, but he was not seeing any signs of Tim. (Perhaps he forgot? That would be the most logical conclusion in this instance, as he did not seem to be of the sort to leave promises and the like unfulfilled when at all possible....)
Harold wasn't really sure how to feel about that. On one hand, his new acquaintence had forgotten to meet up with him, but on the other hand, he himself probably would have too....he gets so sidetracked by all the ideas that pop in his head, and by paying so much attention in class....
He decided he would wait 5 more minutes for any sign of Tim. Or maybe Thisa. (Ms. Thisa was indeed an interesting companion to converse with. I see no fault in wishing to talk with her again in the future....)
So Harold leaned against the wall, shifted his bags around to get comfortable, and took off his glasses and started cleaning them while he waited.