I Reincarnated as a Doomed Villainous Noble: I Don’t Want to Die, So I’ll Master Dark Magic and Save the Heroines!

I’ve been reincarnated as the hated aristocrat Diabolo in a game world, but the fate closing in on me is a brutal retaliation from the heroines... To atone for and save the heroines whom Diabolo once disgraced, I will overcome harsh difficulties and obtain the strongest power!