I Heard That You Were a White Moonlight in Every Dynasty

[History + Present and Ancient Times + Back and forth Time Travel + System + No CP] Do you think history is the only truth? No. That's just the "corrected" version of the Space-Time Administration. There is no script, no archive, every mission is an unknown challenge. In the long river of history, they cleverly planned to turn things around and put the derailed history back on track. This is a game with the "butterfly effect". Where is the next deviation point?