Oh. Even though Kai had been so, so sure that they were all there together, that assurance didn't stop his heart from leaping up his throat at that glimmer of a response. It only took a moment for him to realize they were coming for the stairs, but his feet were already moving anyway. Quick, quickly...!

Ah, but. Maybe too quickly? Not quick enough to do anything about the spill happening ahead of him, but plenty fast enough for Kai to stumble his way down to join him. "Whoa--!"

Time to rock and roll and accumulate a few bumps. Time to immediately ignore all that and roll over to scramble over to this extremely important boy.