You know, it's a weird thing to say, but Deep Space Waifu and its spinoff game(s?) have a kind of nostalgia for me. But screw that, this one has breast expansion! All hail Love Machine, our new savior!
In all seriousness, though, it's great to see these games getting a spiritual successor. The concept is (obviously) great, and the vibes are on-point. That fake-retro sort of aesthetic is handled quite well. I like the not-quite-Space-Invaders design of some of the enemies. And the gameplay is also very nice. Obviously, with just one girl, I can't exactly get a full understanding of how the gameplay will pan out, but it definitely seems challenging but masterable so far.
And I'm glad you carried over the "gentlemen's badge" from Deep Space Waifu (at least, I think it had a system like that?)
Anyways, you've definitely earned a good rating... as soon as this jam is over and I can actually do that.