Wait, this is actually... good? I mean, it's a short game (only 3 stages), but the degree of completeness is very high. Each new level has new enemy variants, new bosses, clothes/accessories actually do something other than just visual. The battle system is pretty well coded. Every time I get hit, it feels fair. It's that I suck at the game, not the controls are broken, which is better than most of the hentai action games.
TL, DR: This is a video game that you can actually play to enjoy, rather than something you just want to get over with so you can unlock the gallery.
The developer posted some pictures last month on his twitter page, seems like some modern-day setting. Not sure if it's the next project, but I'm very interested.