Investing In My Two Crippled Wives Gets Me 100X More Returns[Isekai, Progression]

Two cripples wives, and a bastard with a cheat system, what could go wrong? --- Ethan Pendragon was the first born son of Duke Arthur Pendragon. He was nothing more than a bastard.  A bastard who used to smoke, drink, and spend time at brothels.  He was born without a mana core, branded as a disgrace, and cast aside by the very family he was supposed to inherit. On the day he was exiled, his father gave him a thousand gold coins, a small bungalow... and two unwanted wives. Both of them were once unrivaled heroines who stood at the pinnacle of the kingdom. Now... one was paralyzed from the neck down, and the other one had lost her sight.  Both of them were broken, abandoned, and just simply waited for their death.  To the world, they were nothing more than burdens, but to Ethan? They were the heroines of the novel he had read before dying in his previous life.  Just when he believed fate couldn't become any crueler... 【Awakening Complete.】 【You have awakened the FATE INVESTMENT SYSTEM!】 From that moment onward, every investment he made would return unimaginable rewards. Spend time with them...Receive priceless returns. Cook for them... Gain extraordinary rewards. Protect them from danger... Receive heaven-defying treasures. Heal their broken lives... Change fate itself. The greater their growth reaches, the greater his own does.  The entire world used to mock a useless bastard, and two cripples heroines, but little did they know...  The same man they cast aside would raise those two broken heroines back to the pinnacle of the world. And when their names echoed across the continent, it would already be too late for everyone who once looked down on them.