The System Will Be Taken over by Qi at the Beginning, I Will Be the System

[Pure invincibility + single female protagonist + traveling + recruiting disciples + decisive killing] The gods in the sky cover my eyes, and a silver spear suppresses the immortals. Qi Kai, who had become an immortal in his previous life, accidentally traveled through time, and the system accompanying Qi Kai was angry because of Qi Kai's failure. "System? If you leave, I will become the system." "If you don't want to practice, just change it to full level!" "Immortal-killing sword? Even dogs don't care about it." "I'm a little hungry. Let's modify some top-quality elixirs for yourself to fill your stomach!" Since then—— Traveling around the world, occupying all the evil spirits in the world. If God stops me, I will kill that God. If a demon troubles me, I will destroy that demon.