After confirming Nora's passing, Zach disappeared with her body, leaving Alzara behind.
Alzara had no idea where they had gone, but she knew they hadn't moved floors. Alzara was counted as an extension of Zach. If the Labyrinth moved him somewhere, she would have followed.
The way Zach had disappeared was also different from how they teleported between the floors. It was similar but different. Alzara didn't know how or what it was, but there was a difference.
She was worried. She didn't know where Zach was, but she knew he was not in a good state of mind.
Over the years since she was summoned, Alzara had heard about some of the details of the relationship between Zach and Nora. They were close.
Zach was an emotional guy. He grieved for strangers he didn't even know. He fought to stop a war to save the lives of people he had never even heard the names of. He willingly became labeled as a traitor to his homeland for that very reason.
