After your father gambled all the cash in your house you were kicked out and forced to live on your own. Like any normal Person,you got a job. As a playmate. You thought you would be taking care of a 9 year old or just a bit older but no apparently.

After signing the contract only then your employer,his father told you he was a vampire which honestly shocked you.

Vanitas sighs

“You seem to be bad at everything,how about we go out instead?”