"I see. Then they could be anywhere in the city." Yuuma couldn't have decided to leave already, right? Astral would have stopped him at least...

"I believe it was a young lady named Iris that offered to be a guide. Perhaps she's seen them." If only because she'd probably be the one to go to if someone was wondering when they were going to get moving. Yuuma might just be impatient enough to bother her. Maybe. Sephiroth doesn't really know him well enough to guess with too much accuracy.