Review of the November demo version:
This is an interesting city builder style game with lewds. You have your MC and his family (all women) and are tasked to essentially repopulate civilization which has mostly been wiped out due to crippled birth rates.
You can build a variety of different tile upgrades and structures, managing resources and slowly expanding your borders. Your can assign each family member to a certain task, which they will then carry out automatically. Periodically wild monsters will attack and try to wreck your stuff, at which point MC-kun needs to go fight them as none of the others can. You can also build forts later on that act like turrets, so you aren't expected to defend absolutely everything by yourself. There's also a gear system you can use to enhance your main characters. As you expand more options unlock, though with the demo limits it's mostly proof of concept still. It's not bad gameplay, and with more development here this could be a pretty decent game even without the lewd bits.
Speaking of the lewd bits, this part of kind of a let down thus far. As far as I could tell, the only way to make things happen was to have the MC use the 'support' command on one of the others for a long time, and then every so often sex happens. They will get pregnant and have kids, but right now this mechanic doesn't really do anything. The art style is nice, but there's a bit too much emphasis on gigantic cartoonish gag-boobs (and I say this as someone who likes big boobs) with only one of the characters having small tits. Maybe make a couple of other characters more normal sized for variety? Particularly the mother, who am impressed can even move around with those...things attached to her.
The concept is great though, and the core gameplay so far isn't bad so I look forward to seeing this one make progress.