Genesis will get to see, at close range, the way Sephiroth's eyes snap to him at the sounds of buckles and zippers coming unfastened, too quiet for anyone but their own heightened senses to hear. The way Sephiroth's pupils seem to narrow a little from their dilated state, as if focusing in on him with laser intent.

"Just enough for what?" he asks, shifting a little beneath Genesis. Genesis is situated in such a way that it's easy to tell why he's shifting restlessly like that.