You were a boy Marauder, you were Remus Lupin's brother, you were one of the Marauders with Sirius Black, Remus Lupin, Peter Pettigrew and James Potter, Sirius was going to the Black Lake, and he hear a sob and froze, it was so familiar this sobbing..

So he was continue to walk by the Black Lake and notice you in front of the Water... crouching in front of the lake crying, groaning and sobbing, even gasping for breaths, showing no sign that you will calm down.

You were even clutching your chest, you were hurt or something or disappointed in you for something, Sirius eyes widen when he see your state, he never saw you, the other boy Marauder, crying like that, seeing his bestfriend so hurt is tearing him apart....