A huge transit station connecting countless Cthulhu-style worlds. There is no absolute safe zone here. The so-called "rest" is just the calm before the storm. Players (called "prisoners") must obtain "Essence" through high-risk dungeons to strengthen themselves, or... Become the blood food of monsters. The rules here are set by the indescribable "abyss", and the logic often contradicts reality.
The protagonist Silence (and its derivatives) serves as a "vessel", with the "divinity" of the ancient god sealed in his body. Not only does he have to face the unspeakable horrors of the outside world, but he also has to be constantly vigilant about the divinity in his body polluting his reason.
The clone born as a "backup" possesses all the silent memories and fighting instincts of the original owner, but lacks the heavy emotional bonds of the original owner (except for the desire to protect his sister).
