In 3025, due to the failure of a devastating experiment, a poisonous gas called "bad gas" began to spread. This gas is colorless and odorless, but it has the ability to enhance the "ghosts" that can only control micro-objects. They can only be killed by playing games. Therefore, the human leader built a game called "Small Night" to randomly pull some "lucky ones" from the world. However, some people say that the game is not controlled by humans.
Purpose: Caring for the mental health of young people