The story
The writers mostly stuck to the plot of the TV series the game is based on, so no surprises there. A few details are changed to inject more lewdness into the story, but there are no obvious seams.
The art
This game is a living proof that your characters don't have to be obvious morphs of Daz3D assets. The makers worked hard to make their models look like the series' actors and they pulled it off. Some of the original or rule 63'd characters added to the game do look a bit out of place with their Daz sex doll looks, but you can get over it.
The animations are a bit sparse and suffer from rigid see-saw motion. There are thankfully few unintentionally comedic cases where some unrelated body part moves in perfect sync with the good old in-an-out.
The gameplay
The VN is mostly linear, despite its outwardly sandbox nature. There are optional scenes and scenes that increase your characters' skills, you can switch between multiple viewpoints, but 80% of the game is a very linear set of scenes, especially in the second season.
The coding
There were a few script errors I encountered during my playthrough, like scenes playing out of order, one sequence of scenes repeating twice and an invitation to repeat a scene I hadn't encountered, but nothing critical.
The lewdness
The makers have an obvious foot fetish, but practically all foot-adjacent scenes are optional. Sex scenes are well-incorporated into the plot and the writing is sufficiently stimulating
The verdict
The game is not without faults, but I am giving it five stars anyway, mostly because it's Game of Thrones with even more sex and not yet another harem simulator with girls that look like microinfluencers.