(No harem, no brain) (Independent world view, imaginary world)
Weird games are coming, and every seven days they will be forcibly invited to randomly enter various weird games. Death in the "game" will be real death.
In this environment, humans have also acquired "superpowers" in order to survive in the game.
The protagonist is a college student, but he becomes a game creator at the beginning, mainly creating replica games, reducing the player survival rate, and earning some kind of "mystery" [behind the scenes]
At the same time, the protagonist cannot let others discover his identity, otherwise he will die...
Can the biological sister who lives with the protagonist day and night discover this secret?
