Investing in the Three Villainesses Gives Me Infinite Returns

Elias is the weakest son of the Crimson Duke, treated as disposable because he possesses no talent for the sword. His family finally gives him one chance to prove his worth: marry three women everyone considered cursed. The first has been burned by her own power and left mute and deaf. The second has been poisoned so badly that she couldn't even move her limbs. The third has gone insane after her entire clan was annihilated. Everyone expects Elias to abandon them. Instead— [Ding! Infinite Investment System Activated.] Every action, every goodwill by Elias toward his wives rewards him multiplefold. But Elias discovers something terrifying. These aren't ordinary women. They are the three future Calamities who would eventually destroy the continent. The man whom they threw away as useless would soon return as someone beyond their comprehension.