I'm in the Apocalypse, but I Have a Sign-In System!

[System-driven story | Apocalypse]

The Earth split open, and spatial rifts began appearing all over the world.

What lies on the other side of these rifts?

That day, an endless beast tide swept across the world.

…

Li Xin unexpectedly awakened a sign-in System!

What? I can get stronger just by signing in?

No problem. I'll take on ten at once!

…