This would allow the player, who plays a vampire to transform an NPC vampire.
Any NPCs in any situation. The only restriction is that NPC sleep.
When the dead vampire prey asleep, he can speak with the NPC and it will be strangely attracted by the vampire.
The player will then have a proposal for discussion in which he can complete the transformation of NPCs offering his blood.
Therefore, the NPC becomes a vampire.
Involved, it does not change the NPCs continue to go about their usual occupations.
When you talk to bartenders, we learn that there is a rumor of strange disease in the city. Some people are tired even after a good night's sleep.
The novelty resides in the thing if we are attacked by town guards or for any quest, we receive help from the NPC that was turned into a vampire.
And they have the basic powers of vampires.