Have you ever noticed that your loved ones around you have been replaced by time travellers?
Some have come from time to time, and even more terrifying ones have taken away the body of the original owner.
When I was in high school, I realized that my father had been replaced by a time traveler, and a drastic change occurred in my family.
Local residents fight for survival
[The enemy has a system] [Various time-travel elements are superimposed]
