Take a Beautiful Girl with You to Slay Demons in the City

I never thought that I could travel through time... But from what is said in the novel, don't all time travelers have systems? The protagonist activates the plug-in and kills everyone, hugging him from left to right and enjoying himself... I'm the only one with nothing? What about Goldfinger? What about the system? "God, please, even if there is no system, at least give me, a time traveler, some preferential treatment?" God heard his call, so a super invincible beautiful girl came... This novel and its characters are purely fictitious. Any similarity is purely coincidental and should not be imitated.