In Order to Go Home, I Want to Speed Through the Devil

On an ordinary day, after Li Ming finished killing monsters, a system called Brave Fighting Demon King jumped out, telling him that the Demon King had been eliminated, and teleported him to a different world, asking him to destroy the Demon King. In order to return home, Li Ming had to constantly speed through the demon king so that he could be teleported back by the system after the demon king was born in the original world.