Ore wa Seikan Kokka no Akutoku Ryoshu!

In his past life, Liam was hardworking and honest. This got him nothing but debt and betrayal. Now he’s been reborn as the ruling noble of a planet. Time for some payback. This life he'll grind the world under his heel! He's only looking out for himself. All his underlings will suffer! But try as he might, his tyranny only seems to make his subjects happier.