Regulus' features didn't seem to know how to school themselves just then, and he surveyed his brother with a slight head tilt, not entirely sure if he believed him

He grew hot under Sirius' gaze, and shifted uncomfortably. He was better at reading him than Regulus would have liked.

"Broken arm and a concussion. So if I fall asleep, be a dear and bring the mediwitch back unless you want to be an only child again." He arched an eyebrow at his brother before return a soft, coy smile. "I wouldn't have thought."