Doomsday: A Failed Upgrade Gives Me an S-Rank Reward from the Start

Human rationality is measured on a scale of 100. When it falls to zero, a person randomly fuses with a nearby object and becomes a monster that retains the desires they had in life.

After the apocalypse arrived, mirrors installed in major cities around the world drove the rationality of seven billion people to zero in an instant.

Zheng Dong, a professional hitman who knew the location of every mirror, struggled through the apocalypse for twelve years before finally dying.

But as his consciousness gradually returned, he discovered that he had been reborn twelve years in the past.

Outside the window, traffic flowed and people still wore smiles on their faces.

At this moment, three days remained until the apocalypse.

This novel and its characters are entirely fictional. Any resemblance to real people or events is purely coincidental. Do not imitate.