Transmigrated Into a Villain: Gave the Campus Belle One Million from the Start

The moment I opened my eyes, I had become a brainless villain in a wish-fulfillment harem novel, doomed to die within three chapters. I was just about to run when the Tycoon Dungeon System activated! "Spending money on a poor campus beauty can level me up?" "Getting close to her doubles my experience points?" "The skills I get from leveling up can crush the original male lead?" "If I clear the final dungeon, I can return to the real world with the harem and hundreds of billions in assets?" What a deal! Original male lead, sorry, but your opportunities and your harem are all my tools for clearing the game now! From this day on, I am the only rule in this world!