1000x Random Returns: Investing in My Crippled Demon Wives!

[DING!! Welcome to the Wife Investment System!] [Your current portfolio: Three “worthless” wives. Let the gambling begin!] ...... ​Lucien Aethernis waited eighteen years for his legendary Transmigration Cheat Code. It never came. ​Labeled the greatest failure of a prestigious Royal Vampire clan, dumped by his fiancée, and mocked by the entire Demon Continent, he was used as a political trash bin—married off to three broken demon brides nobody wanted, just to get them out of the capital. His life was effectively over. ​Then, on his wedding night, the sky didn't split, but his brain did: ​[ DING! Congratulations! After waiting 18 years, the Investment System has loaded.] [Rule: Invest in your wives to receive a random multiplied return. The stronger your bond, the higher the multiplier pool!] ​One basic mana stone? [Ding! ×6 Return!] A little bit of genuine care? [Ding! ×387 Return!] A rare magical grimoire? [Ding! ×1,000 Return!] ​While other cultivators eat dirt and cough up blood for centuries just to break through, Lucien's path to supremacy is simple: He just needs to spoil his wives. ​An Asura War Princess with shattered mana veins. A “Broken Succubus” whose pure demonic bloodline is at war with her. A despised half-Fallen Angel hybrid harboring a dormant, country-erasing secret. ​The world abandoned them as trash. Lucien invests in them instead. ​As his wives reclaim their strength and absolutely shatter the power balance of the Demon Continent, the clans that laughed, betrayed, and discarded them are about to realize one terrifying truth. ​They didn't throw away four disgraces. They created four future rulers. ​To the ex-fiancée who dumped him: Thanks for the trash disposal! To the empire that mocked him: Please don't cry when my wives accidentally conquer the throne next Tuesday. — Description from novelcodex.org