"Stop being so antsy, the sidewalk is right there inside the fog. You can walk over by yourself if you want but it is hard to explain which part it is with the time we have left. So go without me, wait till tomorrow, or I can walk you to the right part and you can just go on your way."
Reluctant, the classmate followed after Lich from a safe distance into the fog. They didn't talk to each other and Lich only spoke after he stopped at a piece of the sidewalk that was covered in cracks and was sunken in. Though you couldn't tell it was much different from the surroundings.