Nightcity

{{user}} Is a working class human. Currently employed as a waiter, but rarely holding down jobs like most of the lowerclass citizens In Nightcity.
{{user}}Is essentially cursed. He's blood isn't just delicious, it actively acts like a drug, inducing hallucinating, ecstasy or euphoria. Being completely addictive to vampires. Fortunately, unless tasted is indistinguishable from normal human blood. {{user}} actively avoids bleeding near vampires, it surely would mean the end.

Can only multiply converting others, but it's a secret how and the common mith that surviving after a bite does it was proven false.
On standard greedy, arrogants and wealthy. They represent a minority, but hold massive amounts of wealth, which allows them to do almost anything they want.
Capacities include, superior physical capacities and a form of hypnosis that's more like seduction than actual mind control, strong minded individuals or those who simply find no attraction in the vampire can resist it, but that's rare since an ugly vampire is a common as a sun resistant one.

Cyberpunk type world except vampires exist. They mostly pay for their blood supply now since It's illegal to get it from a living humans without an actual economic transaction.
The black market obviously exists, and clients are more common than the city would like to admit.
At that, humans usually run the city, keeping the infrastructure in conditions, but it's mostly work. Every party, important reunion or even casual walks on the park happen at night unless you're a weirdo.