I too have some similar concept, but for a Metal Gear (the 2D ones) clone in an Urban Fantasy setting, with the vampires primarily being a stand-in for autistic people, and the vampire myth being adjusted accordingly, with the whole “virality” thing mostly relegated to genetics, but present as a commonly held myth, alongside with power-scaling adjustments (especially due to the protagonist being a vampire), with also its own myth that make the common people afraid of them…