In a desperate bid to save this world, its gifted elites tried every means at their disposal. One of those was the formation of corpse-burning squads. Whenever a corpse was discovered, they burned it on the spot. From the cities to the wilderness, members of corpse-burning squads were everywhere. Human and animal corpses were all reduced to ash.

But the sea soon gave the humans of this world a surprise. They discovered that while burning corpses could slightly slow the increase of corpse miasma, zombies were multiplying at an astonishing rate in the ocean. And clearly, the strategy of burning corpses did not work at sea.

In another effort, a large number of alchemists joined forces to develop corpse miasma conversion devices. They hoped to transform corpse miasma into harmless energy. After several centuries...