There was definitely a change in the atmosphere between Zick and Yuriel. With their relationship turning intimate, Yuriel felt a lot closer to Zick.
Zick didn't let the atmosphere affect his thoughts at all: 'Hmm, though some time had passed, Vuerin must be confined in her prison by now.'
'I wanted to meet her in her weakest state but it doesn't matter. Keeping good relations with every subordinate isn't necessarily a good thing. As long as she heeds my order I don't care much.' Zick didn't think that good of Vuerin.
Her personality wasn't the type that easily bent to other people. Kindness wasn't that effective against her too, Zick just wanted to try it in the end.
Vuerin, this harem member, was very important in Zick's plan. She could control hundreds of thousands of corpses at once, forming a formidable force.
Even her individual strength was not bad, she could threaten the grandmaster rank beings' life.