Fantasy: I, the Most Powerful Demon King in the World

Travel to a fantasy world where demons roam and become the most powerful monster outside the Demon King's restricted area. With low strength and worrying about survival? The strongest demon king system in the world is online, and it will handle all kinds of dissatisfaction! "Kill an ordinary monster and get +9999999 experience points!" "Kill a demon beast lord, your lifespan will be +9999999, and your territory will be expanded ten times!" "Kill the ancient Tianpeng, one of the ten demon kings in the Demon King's Forbidden Zone, awaken the blood of the ancient demon, and gain the innate skill Ten Thousand Demons Submit!" Me! The most powerful devil in the world, tremble, you ants! This novel and its characters are purely fictitious. Any similarity is purely coincidental and should not be imitated.