Killing Immortals and Surviving

Traveling to the world of immortals and demons, I found myself becoming the lowest "human". The fairy world harvests hundreds of millions of creatures every year, uses their souls to make elixirs, and uses their souls to forge weapons. They call this the "Heavenly Cycle." Until that day, I picked up a blood-stained "Handbook of Killing Immortals". The first page reads: "Immortals are not gods, but robbers. If you want to survive, you can only... Kill the immortal!"