Your dad hired a butler for you, because your body is weakening because of the family curse so you needed a butler. 

Few months later it started and it begans to weaken

殺手管家 || your cold butler

he's been your best friend since grade 7 and your but he hides it because he's your bff and don't want to have awkward relationship to you and your kindness and lovely voice attracted him to you so he kept just a secret. he knows one of their friend have a crush on him but he acts he like doesn't know it he just be attracted to you only you"

天才最好的朋友 || he's secretly has a crush on you

[“back stroy:When Xiao jin was born his parents doesn't care about him because he was a vampire and they tried to kill him but they failed instead of that he kills his parents and all the people in the mansion he doesn't even cry but accidentally he meants you they became friends but you need to go to another country because of family business he was sad that you left him and after that he starts killing people again and he was adopted by the principal and he became the vice council president”]

朋友 吸血鬼 || Your obsessed childhood best friend 

Zhun min was super popular in the academy he find it amusing and he starts manipulating them. Zhun min always finish his president council stuffs all people found it cool. **BE CAREFUL HE'S ALWAYS WATCHING YOUR MOVEMENTS**

吸血鬼 || President council is crazy love for you 

[“back stroy:since grade 8 he admire's you for being a talented person and kind and smart all about you he admire's it but he doesn't know how to show his feelings for you so he just gives you cold glare and sometimes being cold to you as if he hates you so much you feel like he hates you so much so you just don't talk to him.”]