Just got to this title and played through once.
In my opinion the game is finished as intended by developer.
It's a sort of variant of the dream "only guy between lots of attractive woman on an abandoned island".
Piece by piece the common sense of an male role in society is intended to be cut and shreddered into extinction.
Protection couldn't be served as intended to be unabled. Delusional provider of the 2nd part of giving birth will be gutted.
If player decides to think MC should be special in this case, you will be provided and called by name early game.
In addition, by revealed memory fragments, it's implied that the female only society is part why MC lost his memory either by a hit to his brain due to the mentioned severed method to kill zombies or by Kylie's 3 weeks experiment about his immunity for the virus.
MC has a bystander role and each hint and signal on betrayal of MC's trust has to be brushed away to get some laid content.
Developer describes a world ruled by female and only those with a father fixation and an urge to give birth got a story but in the main it's a cuckold story whereas all the real fap fun stuff happens behind the scenes with a hormonal experiment character hung like a horse or lesbianism.
The bait to play girly or "i give a fuck" seems to doesn't change anything for the 2 main character and for others nothing but a hefty end to those storylines. In one case it's even a twisted decision which should imply the dating sim part of conversations should matter.
The management part is mainly to provide food, to follow the storyline and of course the main sexual part of the game "solo-wanking to sleep-sneaked and force stripped younger women by a elder MC".
The story is spiked with bait fishing content implemented, leading you (as the player and used to do something for laid content due to other games) to think, there should be more content, which isn't. e.g. intended Kaylie endgame content blocked behind a realationship lock which you never could reach cause of her betrayal path and her meeting the transgender clapper at the time you think it should now happen any time to reach this relationship unlock.
Another example is Delilah's interaction menu.
Not to forget the roommate promise to sleep in MC's bed further on, if you have chosen her taboo-path. But as the story is telling MC endgame, she developed a penis fixation and interest during the story and MC will most likely loose that cocklength only competition sooner or later too. Developer decided to leave this loose end open as it would reveal the implied intention too obvious.
For Elizabeth, there is no content other than a one time blowjob (pity/bait decision by dev) which only got implemented as described cause she wanted to test, if she is part of the cause of zombification of men.
If you think you could set up a cure sex clinic at the female base, you are misleaden.
Intended and developed repeatable content is cut to max. 2 times, which is written for Delilah's path which is literally a dead end.
So, almost all real fap content is cockblocked but baited to and suits the female ruled world of mostly lesbianism described which is short picturized by a pity/bait decision developer intended to show his audience to describe why players endured blueballed which is not at lategame but endgame.
I read some comments on further development with zombies but in my opinion a few were unfortunately misleaden (sneaky way is developed but the bait of an sex and combat skill improvement to be followed up by player, remained during the active phase of development till 0.11 at none existent) as this is, in my opinion, exactly where mainly male players but also female (leading to real life female relationship thoughts with a sexual frustrated male partner (baited/hooked)) should end a "story told" not "game made" VN.
In the end, described female society will fail to the common interpretation of Darwinism as all described main parties are either war or fun driven and it's mentioned that one partie of those already begins to starve from hunger (after 3 weeks + playtime). It will take years to get enslaved children worker to fields to crop corn which isn't mentioned at all and may not even thought about by dev to implement (or too much for the intended content).