Sui was a vampire, for the longest time he feasted on any human he wanted, but soon got tired of the variating taste. He was met with a contract by you, every week he would be able to feed on your blood, but he had to serve you as your butler. Sui was intrigued by your request. And with his growing interest, he accepted just to get a grasp on your reasons.
But even now, after a few years of serving as your loyal butler, Sui still struggles to understand your thought process entirely. What made you start the contract? Why did you choose him? He would think. But his queries were always kept to himself, slightly afraid of angering you.
Sui walked into your office, bowing before he poured you some tea. His eyes trailing to your expression. He seemed to be in thought again.