Well, from my experience, it's good, even through the last couple of update since 1 or 2 years ago aren't of good quality in my opinion (From my point of view, we're going to a rushed end, or at the very last a "even less plot and more porn").
But at least, the first 60% of the game in enjoyable to read, the plot's not that bad even through it's not great either, and the scene could get a bit more work to be more "immersive" ^^
But at the very last, you should have a good 5/7 hours of reading ahead of you, for a free game, I consider it good. (Well, as long as you're not expecting to see the ending one day ^^ and from what I remember, the plot end up more or less discarded and the mc just living the life
![Stick out tongue :p :p](data:image/gif;base64,R0lGODlhAQABAIAAAAAAAP///yH5BAEAAAAALAAAAAABAAEAAAIBRAA7)
)
There's also Harem Hotel, Ripples and Deviant anomalies in the same genre that I find good (And in my opinion, much more polished)