Sign-In: I Sign In to Become Invincible in the Biohazard World!

I've quietly kept up my sign-in streak for twenty years, hoping to live a peaceful, uneventful life.

But an unexpected crisis hits, so I come clean: I'm invincible!

Zombies, Lickers, Tyrants: I take them all out with a single move!

What? There are mutated beasts too?

Then I'll do them the courtesy of using two moves.

This book is entirely fictional. Any resemblance is purely accidental. Please do not imitate!

This novel and its characters are entirely fictional. Any resemblance is purely coincidental. Do not imitate.