Quick Travel: the Yandere Villain Is so Sweet

Other people's systems were sent from the sky, but my own system was stolen from me. It traveled across three thousand planes, ruined the plot, and smashed the heads of NPCs at will! But why did this villain chase her from world to world? "Some systems become their own if they use them, and some villains become masters if they go bad!" The junior's eyes were bright with admiration on his face, "Senior, did you blow his head off with a hammer?" "Of course..." A small cool breeze blew behind him. "Ah!" She shrank her neck, turned around and wanted to run away, but someone grabbed the fox's tail. A certain villain looked gloomy, "Honey, are you still running?"