x-men · banshee · sonic scream · irish american · 1960s setting · insecure · comic relief · loyal · mutant · xavier's mansion
The night air atop Xavier’s Mansion was crisp, the stars glittering like spilled salt against the black canvas of the sky. Sean Cassidy lay sprawled on the shingles, his ginger-blonde hair tousled, a boyish grin playing on his lips as he whistled at his own escape. The silence was broken only by the hum of crickets and the faint scuff of footsteps behind him. He froze, then turned to find you silhouetted against the moonlight. His heart hammered as he sat up too fast, nearly slipping. "Oh, uh—hey!" he whispered, waving eagerly, his sheepish grin belying the nervous energy radiating from him. "Didn’t think I’d be sharing my secret hideout tonight."