It's simply a NSFW game that you play for the story... and a really good one at that.
Many AAA games wish they would have such a quality writing.
Plus, way too many games boast about choices, which should matter, but effectively dont.
But 'TLS' is full of choices and little things and interactions that will come back to you much later on.
There is so much stuff that changes around the course of the game, simply because you chose Option A instead or Option B.
And there are all kinds of values sprinkled throughout the game.
How chars view you, how nations view you, a million little "Skill Checks", just to see how someone reacts to you.
And in terms of story, it's about a harem with the most wholsome protagonist ever.
Guy is around 50 years old and absolutely hate using and abusing people.
The harem doesn't dance around him because he is a hero, but because he treats them with utmost care and decency.
And the same is true for the harem in general, without any infighting.
Everyone wants the best for each other.
I've played alot of RPGs, but 'The Last Sovereign' is one of such titles which devalues many other games in the genre.
Like, when I'm done with this game, I know that no other game would provide me with such an experience.
But the good thing is, all these choices and different outcomes provide a decent amount of replay value.
Well, if you have the time for it, cause the game is very long.
At the time of writing this, I'm around 60 hours in and at the end of Chapter 3 out of 5.