Harry managed to disentangle one arm from his shirt, not overly concerned with getting the other totally free just yet, his own hips shifting to put a little more space between them so as to make Seunwoo's task easier.

Of course, he went and made it more complicated again when he slid his newly-freed hand up under Seunwoo's undershirt, palm warm against his side and his ribs, just resting there, the undershirt bunched up against his wrist.