The Demon King Competition

Over the last 500 years, there have been four Demon Kings or Queens. The first King rampaged, destroying without ruling the destroyed lands. The successor was a Demon King who ruled with an iron fist rebuildingthe destroyed lands. The third was a Demon Queen who added more lands to Demon Kingdom, but couldn't keep control of the outer provinces, so they fell to ruin. The fourth, and shortest reign, declared the defeated races within the realm equal citizens to demonkind, and made powerful enemies in the process. He was assassinated after only 30 years in power. So now the Demon King Competition has come again. A brutal and bloody tournament to decide who has the power to rule. Do you have what it takes? And what direction will you try to bring the realm if you succeed?