Once back on the upper level, Sephiroth finally dispelled his Levitation and settled himself nearby to the rope that others were climbing back up. It looked as if the toppled column they secured it to was holding the weight, but he maintained at least part of his attention in case it might look like it could be straining. It wouldn't do to let the others be stuck down there after all, even if he doesn't care personally for any one of them.

In the meantime, he let his eyes follow the light-train, letting his logic work its way through the mechanics he'd already observed in other parts of the tower.

"I'd say it'd most likely be the right-hand doors we found on the way down through this section." He answered Kuja, taking care not to sound too condescending, though it did seem pretty obvious to him at this point. This whole structure they were exploring being a giant puzzle to solve, as it was turning out to be.