(The first eight chapters explain how the twelve of them transmigrated. Some of the twelve protagonists will be replaced later, because some people leave the sworn brotherhood.)
In a world under clear skies, the twelve of them met through a game.
After their sworn brotherhood's leader, Qin Yu, wrote the opening of a novel starring them, they transmigrated.
The setting includes humans, immortals, demons, ghosts, gods, witches, and monsters. They set off on an adventure.
A note to all: every chance encounter in the martial world is a destined meeting.