Night Shift. Subscription to Thirst

At first, Kir died. Usually, the hero dies at the end, but Kir, as always, was unlucky. Then he broke open the coffin lid and got acquainted with the underside of night Moscow. Now his home is the secret metro stations beneath the heart of the capital, and his only companions are the cynical mentor Damir and the cold witch Yarina. Kir settles in a community of those who have been hiding in the shadows for years. He has to learn not only to satisfy his hunger with "canned goods" made from donor blood but also to make the main choice: to completely lose his soul or to preserve his humanity at any cost.
While Kir's girlfriend mourns his loss above, dark clouds are gathering in the underground world. One by one, his fellow vampires are burned alive - an ancient prophecy about the Firebird threatens to put an end to their un-life.
This book is a dark urban fantasy about the attempt to remain human even with a non-beating heart and the desire for life that conquers death.