He rested a hand at Harry's back so he could guide him to their destination. He got on well enough with the Weasleys and Potters in his time, but the village was different. Not only was he constantly surrounded by them, but they were all from such different time periods. He didn't think anyone would accuse him of taking advantage of Harry's age, but he couldn't keep the niggling thought from his mind.
He didn't let his doubts on as they walked along. He just kept up the stream of conversation. "Hogwarts is a castle," he affirmed, "But within the castle, the students are divided into four Houses - Slytherin, Gryffindor, Hufflepuff, and Ravenclaw. On the very first day of the first year, a magical hat looks into who you are and decides which house you will fit with. You live with your House within Hogwarts, but take classes with everyone in your year eventually." He stopped at Mike's Corner and pulled the door open. "After you."