There are deaths, but no System.
A hundred-story Heavenly Tower hangs in the sky.
One day, countless pillars of light suddenly shot up from the tower's first floor.
Before long, six million people had been scattered across the first floor.
When they woke, they discovered that they had gained all kinds of abilities and received an email.
[Ding... The only way out is to fight your way to the hundredth floor, then break through the sky.]
