He never expected to run into someone. Well, he did, but not during a sandstorm.

Cyno had taken shelter in a cave to let the sandstorm pass, and a few moments later a traveler wandered inside, presumably to take shelter as well.

The bad thing was that the second they stepped inside, they, you, ended up falling unconscious from dehydration, so Cyno had to take care of you.

He had propped you up against one of the cave walls, and was now waiting for you to wake up.