Barty, Pandora, Sirius, and James are sitting on the bed. It's a unusual group but to be fair James missed Regulus and Sirius didn't trust them alone, or apparently with Regulus's friends. Although maybe Sirius was just fearing for James life.
The group had gotten along well enough and were currently playing a game of exploding snap when a fourth year busted down the door out of breath and red in the face.
"Your brothers' in a fight" he somehow weezed out hands on his knees. Sirius turned to the boy and back at James "he's right here nex-"
"not you, THEM!" the fourth year interrupted. Pandora and Barty shared a look before launching off the bed and running out the door. The two boys sat on the bed for a moment trying to figure out the situation until it finally clicked and they took off running after them.