While the glowing markings drew the attention of the crab, the stare down and punching of said crab is what caught Sersi's attention. She hesitated a moment over whether to approach him, but seeing as he only struck the crab when it attempted to swipe at him... what could it hurt to check on this new arrival.

With a kind smile as she approached, she glanced only for a brief moment at the crab, then back up at him. "Well, at least it won't be bothering you anymore."