If one of the Magical Girls clicks on one of the Site of Magical Girls Administrators, she will have access to a countdown. It is said that when the account ends, the Tempest will begin, which will cause the destruction of humanity.
Way to Survive Edit
The Administrators say that only the Magical Girl with the most Sticks and the highest use of negative energy will survive the Tempest. Although it is questionable how this works, it is true as in chapter 86 Nana says that it’s true and it’s better then to tell from start then to hide it, but it is quite impossible due to them running out of lifespan before they can collect enough.