Reborn As a System

Space, System, Treasure, Spirit Tools ... other protagonists all have golden fingers, Shi Qing: this young grandpa [Xiao Ye] is a golden finger.
It's just that ...he is now a golden finger and even more importantly bound to a host?
And so this host, has a backstory resulting a bloody darkened heart and soul, truly a psychopath!
A psychopath I can endure, but I also have to work together with the psychopath through different worlds, can I endure?
Ancient times, modern times, apocalypse, futuristic....
Traveling throughout the worlds, Shi Qing thinks the host isn't as bad as he imagined? Strange.
Reading Guide: Fast paced, CP Clear, 1v1, HE, good morals