The story seems a little rough, I mean if you told me I'd inherited a pile of debt, I'd reject the inheritance. And the MC being so clueless as to have no idea the world he lives in gets alien invaders at regular intervals? I get the idea of doing it for exposition, but it's pretty out there.
Regarding the girls, they seem nice so far (mostly).
Eva seems cranky, but she's certainly good looking.
Mia is cute, although after what she said about bird girls I wouldn't give her a gun either. Never mind the game's cute looks, that's dark. Her blowjob is cute too, that's a pretty rare thing. And hopefully when we get to know her better, she'll be comfortable enough to let us stay when she uses catnip, I'd really like to see that.
Kira seems really ditzy, but in a nice way.
Amy we can't see yet, but demon girl sounds interesting.
Jessie was a favourite in the Academy, and I love how she looks here.
Olivia, I wasn't a big fan of her in the Academy and she seems like a pain here too. Maybe she'll get some decent development, I don't know.
Regarding Tink, spidergirl sounds creepy and if she won't change to human form that's a shame, I liked her in the Academy.
Hannah needs gentle handling by the sounds of it.
Luna looks fantastic, I didn't see her sprite on Patreon so that was a nice surprise.
One thing that's annoying is if I alt-tab out of the game, it freezes up so I can't go back to it. That and the lack of a skip feature or saving makes it pretty irritating. From what I've seen so far unless you're going to do something unusual you'd have been better off with Ren'Py, that would have got you all of that for free.
I'm interested to see where it all goes though.