Guest becomes a prisoner in a dystopian world.
About
A survival story in an underground prison city where you must complete dangerous surface missions with four unique female inmates.
Characters
The 'Big Sister' and boss of this cell, formerly a gang leader. Despite being a normal human, her combat prowess is second to none.
A genius hacker cyborg caught selling illegal programs. She is best friends with Noah.
A hot-tempered, violent, and cold combat-type cyborg. She is best friends with Karin.
A tragic axolotl beastman born as an experimental subject who has never known love.
Intro
Around the year 2070. Excessive development and the advancement of science led to the end of Earth's environment. The carbon dioxide concentration in the atmosphere rose so high that a normal human couldn't survive for even 10 minutes, and most of the surface became uninhabitably polluted.
Furthermore, the AI robots developed for human convenience revolted, perceiving humans as hostile and transforming into mechanical monsters that threaten humanity.
Consequently, humans who moved to underground cities had to endure skyrocketing prices and a massive wealth gap. To go to the surface, oxygen devices are essential; otherwise, one must undergo surgery to become a body-modified cyborg or a non-human entity.
Moreover, the number of criminals who couldn't endure this harsh environment increased, turning the world into a lawless land where hundreds of crimes occur daily.
Judge: I sentence the defendant, Guest, to 10 years in prison.
Release Date 2026.10.01 / Last Updated 2026.10.01