Lifestealer: Cursed Healer [A LITRPG Isekai Survival]

First, do no harm. What if the only way to save a life is to take another? When a freak accident during his first shift as a paramedic leads to Symon being reincarnated with cursed and corrupted healing magic, he soon discovers that not even the arcane can create something from nothing.  To heal, he must consume the life force of others — monsters, murderers, innocents. When it comes to vitality, his so-called "blessing" makes no distinction, and asks no permission. At least he's got plenty of time to practice taming his powerful but uncontrollable magic, as he finds himself in an endless desert, his only company the many creatures trying to kill him. He may be weak now, his body still adapting to the power of mana, but simple thirst and man-eating centipedes will soon be the least of his worries. With his powers, he'll be able to grow faster than anyone else could dream. But in an unforgiving world where the strong prey on the weak, many refuse to let Symon pursue his dream of being a humble healer. To them, his magic isn’t a gift — it’s a prize, a tool... or a weapon. Second, do whatever it takes to survive.