Overview
In his last life, Liam worked hard, played it straight, and got nothing but debt and betrayal for his trouble. Reborn as the noble ruling a planet inside a sprawling interstellar empire, he's done playing nice. This time, he's going to be a proper tyrant: squeeze his subjects, hoard the wealth, and look out for nobody but himself. The problem is that Liam is actually good at his job, and every ruthless, self-serving decision he makes somehow ends up making his planet richer, safer, and happier. He can't seem to stop accidentally being a good ruler.
What it does well
The joke has legs because the story understands exactly why it's funny: Liam's standards for what counts as "evil" are calibrated to his past-life trauma, not to any real cruelty, so his idea of ruthless exploitation usually just means competent, efficient governance dressed up in villain-speak. Watching him talk himself into believing he's the bad guy while his subjects build him shrines is the engine of the whole book, and it doesn't wear out its welcome the way a lot of one-joke isekai comedies do, because the humor keeps circling back to who Liam actually is underneath the posturing.
The scope helps too. Because Liam is a noble managing an entire planet rather than a lone adventurer, the story gets to be a comedy about running a government as much as it's an action isekai, and that gives it a different rhythm than the usual dungeon-and-leveling formula. Political maneuvering, economic schemes, and space-opera set pieces all get folded into the same joke instead of feeling bolted onto a generic power fantasy.
The art keeps pace with the tone, leaning into big, exaggerated reactions for the comedy while still selling the scale of the setting when the story wants a genuine sci-fi spectacle moment.
Where it falls short
The "everyone loves the guy who's trying to be awful" premise is funny, but it's also a formula, and the manga leans on it hard enough that later volumes can feel like variations on a theme rather than real escalation. If the first few volumes don't win you over, more of the same isn't likely to change your mind.
The harem elements are fairly standard for the genre. Rosetta and the other women around Liam get individual personalities, but their arcs mostly orbit his obliviousness rather than getting real momentum of their own, so the romantic side of the story is more decorative than central.
Verdict
This is a comfort-food isekai comedy that knows exactly what it is: a guy who can't help being competent, surrounded by people who keep thanking him for it. It won't surprise you with where it's going, but the central joke is sturdy enough to carry a long run, and the planetary-scale setting gives it more to play with than most "reluctant hero" comedies bother with.