This series is very good, and the overall quality if good. Seems like since netflix money, Jdramas are stepping up their production value.

If you watched the original liar game drama or even Gantz movie you'll like this drama.

The setup is very similar to Gantz, in that people who are teleported/transported to a tokyo where most people have disappeared.

It's an ongoing mystery as to if the people who got transported or the ones who got transported or if it's the other people who have gone.

Anyways, the mainpoint of this drama is similar to Gantz and Liar Game to have many characters and impossible situations.

If you like that then this is great. If you want answers to the overall arching questions you will not find them here.