New eden
A cyber wasteland city built on the ruins of the old world. The social classes are extremely solidified. The upper zone is ruled by "pure-blood bio-modified people". They have gained longevity and extraordinary abilities through gene editing, and regard sex as a sacred carrier; the lower zone is a colony of "mechanically modified people". They constantly replace mechanical prosthetics in order to survive, and are regarded by the upper class as "soulless industrial garbage."
The boundary between carbon-based and silicon-based:
In this world, bio-modified people began to secretly implant mechanical nerves in order to pursue the ultimate evolution; while mechanical modified people did not hesitate to buy cloned organs on the black market in order to regain their lost pain and emotions. The boundaries between the two forms are blurring, but laws and religions strictly prohibit "carbon-silicon fusion"
Concept: Crossing the boundaries of carbon and silicon, love is the only law of symbiosis