Global Reincarnation: Only I Know the Plot - Chapter 131:

The moment when mercenary leader Kwang Hwi receives video game like abilities, the world is suddenly thrown into chaos. A thick fog envelops the Earth, bringing with it savage, otherworldly monsters. At the same time humanity has been rendered defenseless against this onslaught, as the strange fog turns most weapons to rust. With mankind spiraling towards oblivion, it is up to Kwang Hwi, with his new abilities, to save the world. Watch as Kwang Hwi leads his militia and becomes the last bastion of humanity. Will he be this world’s savior, or its conqueror?

The archaeologist “red-haired witch” made too big of a disturbance while excavating tombs, gloriously becoming a martyr in the midst of the grave chamber’s collapse. Seventeen years later, she had transmigrated into the Five Regions Continent. The delinquent Meng Fuyao who struggled to survive in the lowest rungs of society, cast aside her boyfriend who was about to marry another person with a slice of his five fingers.

For unknown reasons, he finds himself transported to a parallel world's Japan, unexpectedly taking over the body of a soon-to-be high school student who had died accidentally. Surprisingly, he did not inherit any memories. However, the first challenge he faces upon arriving here is a language barrier...Just as he struggles to communicate with his new family, a heavenly voice arrives: the black technology system has been activated, and the initial item—translation konjac—has been distributed.This is the story of someone with above-average intelligence but almost no physical strength in the Classroom of the Supreme Power.