This left Mazitine at the precipice of bewilderment and self-doubt. He knew the moment he took this job that Xiran could be ruthless if things didn't go according to his wishes. The last mayor was secretly involved in the trafficking of young human girls. They were sold out to wealthy vampires, to be rap*d and then sucked dry of their blood.
Xiran discovered it and unearthed the whole ring of traffickers and gave them all a merciless death, including the Mayor. He showed no mercy when it came to breaking the rules, blatant lies, and using someone against their wishes. The Mayor begged for his life in the end but Xiran's disgust at the man only earned him torture and decapitation. Xiran also made Mazitine watch, so he would know what he was getting into and what happened to those who broke his rules and trust.