The story takes place in a future city called "Aethelburg". The city is shrouded in a huge energy dome, isolated from the outside world in a heavily polluted wasteland. The city is vertically layered, and the top floor is the "Sky Dome District" floating in the air, where the elite live and enjoy pure air, sunshine and cutting-edge technology. The middle level is the bustling but crowded **"metropolitan area"**, the core of business and ordinary citizen life. The bottom floor is the "Shenyuan District" that never sees the light of day. It has a harsh environment and is a gathering place for black markets, gangs and forgotten people.
The core technology of this world is "Memory Distillation Technology" - a technology that can extract, purify, edit and even instill memories from living or newly dead brains.
