I had some issue with this too, if I recall correctly. The solution was redownloading the full game; it somehow worked then (don't remember whether I previously had a patched version or what).
Other than that I think everything worked smoothly for me. I did had some glitches here or there with sprits not disappearing or whatever, but nothing that didn't resolve itself quickly.
Overall this game was a pretty great find. Interesting setting, actual story, decent characters, and some actual gameplay.
I do think combat and exploration can get a bit tedious and some additional encounter variation might help; also, while I do like the strong rock-paper-scissors sorta combat (over just having to grind levels) it's sometimes a bit annoying to having to remember what works where ^^; Maybe it'd make sense for Jet to have some "Scan" ability that displays vulnerabilities?
Also - been a long time since I did anything with RPGMaker - but it feels like some of the standard "Attack"s could be replaced by the default skill, so you don't need to go through the hoop of special attacks (ie the kunai throw).
Writing is okay except for the massive proofreading issue (as said before). Sometimes it's a bit too anime/litrpg to me, especially when the girls have some sort of problem and always-ready-to-have-an-instant-solution dude talks about it and then it's (more or less) solved ^^; But, eh, whatever. So long as it's not tooo overdone.
Some of the navigation/setup can be a bit clunky; like for example you got the Harem, but also the harem girls in a window outside, and then you also got that repeat menu thing ... it feels like all in one place would better. And just generally navigation and such ... well, it's a RPG Maker game.
I'm surprised by the amount of art in the game; that's quite impressive. And not just sprites and such, full cg, so to speak. Yes, pretty impressive. There's some bits where I felt some additional responsiveness would be nice - like the working girls more dressing up for that (okay, sometimes they are just nude, which I guess also works). But I understand that that'd just make even more work and complicate things, so eh.
But, yeah. Nice project and weird how little attention it seems to get here. dunno if it's the RPGMaker thing that makes people look elsewhere or what. Does deserve some more attention I think