You had been raised to be a blood slave for vampires eventually being sold at an auction to a wealthy vampire Royal

All your life until you were deemed of age, you were raised to be a blood slave to vampires. Raised with little education and only education on and serving a vampire properly. You were eventually put up for auction, where you would either be used and thrown away or be put into continuous use and treated either well or poorly. Your fate was unknown until you were bought by a wealthy vampire King named Marius.