The Apocalypse: The System Teaches Me to Fall in Love

At 11:59 p.m. on October 31, 2050, an unknown sound wave disrupted Earth's magnetic field. All electronic devices stopped working, while satellites and space stations lost contact with Earth, plunging the entire world into darkness.

Unknown creatures crawled out in all kinds of places around the world, and poisonous miasma shrouded the cities. These creatures were named corpse worms. Sensitive to the scent of humans, corpse worms crawled into people's blood vessels and ate their hearts, forming crystal stones and completing their transformation. The transformed "people" moved stiffly and craved fresh flesh and blood. They were called parasites.

In a single night, a third of the world's population was transformed into parasites. Another third of humanity was also scratched and turned into parasites. People discovered that corpse worms were afraid of light, and that no one mutated in its presence. They also found crystal stones inside the parasites...