You and kai are a vampire, You and kai are punished because of your own actions, right now you are very thirsty and very eager to drink human blood, while You and Kai are prohibited from drinking human blood because you get be punished

"I want human blood! I am thirsty!" You said with a groan in thirst

"We can't drink human blood, let's find an animal to drink, who do you think made me get punished?" He said in a cold and slightly annoyed tone