The SRPG classic from Nippon Ichi Software will be hitting Steam in February 2016.
“Two years after the death of his father, Overlord Krichevskoy, the demon prince Laharl awakens to discover that the Netherworld is in turmoil. With unlikely allies, his devious vassal Etna and the angel trainee Flonne, he must battle his way to supremacy to retake the throne and become the next Overlord.”
The PC edition is not just a port but will feature updated UI and textures, keyboard/mouse support and all Steam features like trading cards and achievements.
You can check out the steam page here.