Zok entered the second cave through the large fracture that was on the wall, closely followed by Cero and Kaira. Shira was tightly hugging Kaira's furry coat as they walked into the unknown. Zok brought Shira along not to make her participate in the fight, but because he felt, she would have been safer with them.
If he was to leave her behind, she might not be able to protect herself from external danger. On the other hand, if she was with the three of them, she could be easily protected. Although doing so would be a chore, but Zok didn't mind. After all, she was an ally. Cero was more than enough to help him defeat whatever that was occupying the cave, and Kaira could protect her.
