Oh No! I've Become a System Merchant!

[All the instances in this book are original. If anything is borrowed, a notice will be given separately.]

This is a world invaded by horrors, where everyone is forcibly bound to a System upon reaching adulthood.

The System isn't a golden finger. It's the beginning of a descent into the abyss.

Those bound to a System must enter one bizarre instance after another until the System disappears.

Survival and struggle are the dominant themes of this world.