Brother, the Most Powerful Cheating System, Don't Kill Me!

I haven't wiped my dad yet, so you just let me travel through time? Me: The rules of the rivers and lakes, the two countries are at war without killing each other! System: You idiot, we are an enemy country, and I will kill every one I can! Me: Then who dares to send a message? System: Just guess what the other person is thinking! What should I do when I awaken the system that is most deceptive to the host? Waiting online, it's very urgent! This novel and its characters are purely fictitious. Any similarity is purely coincidental and should not be imitated.