There's a pause at the foot of the stairs, Aidan's empty hand resting on the bannister to give him something to brace himself with before he dares look up. As soon as he sees Kai like that, so carelessly sensual and half-naked, his pupils are visibly blown against the pale green irises and the breath catches in his throat before it slips out in a shuddering exhale.

"Kai..." he begins in a voice that's dropped to a barely audible rumble. His fingers tighten on the rail and he swallows.