Remember Me (Teenlock)

Sherlock has been going to the same boarding school ever since he can remember. He used to be able to go home over the holidays with his older brother, Mycroft, but one year he is informed he can't go back home and Mycroft goes alone. For the next three years, Sherlock has only his memories of his parents and beloved dog to support him with everything he has to go through. When one day a boy named John comes to the school and is placed in the dorm next to him, Sherlock is certain he'll trade out soon, only to find out he's wrong and accompanied by a new friend, and possibly something more.