Just finished playing the trial. There is indeed a gore filter, along with the options to remove scat and ahegao. Two neat features are that you can make the window any size you want, and you can drag the textbox to anywhere on the screen. The former is especially nice, since if you fullscreen it, the graphics look condensed and jagged. The karaoke version of the opening theme is godly, and while the rest of the soundtrack isn’t particularly pleasant to listen to, it does create a heavy atmosphere of suspense.
As for the actual content… as I suspected, Miyako was just a throwaway character, although the rest of the characters are interesting; Nemu is a cunning and cruel villain, Rika is fragile and childlike, Kanae is self-sacrificing, and I’m curious about the reason behind Rinne’s mysterious migranes… You can pick which girl will be the victim in each round of the game, but what follows isn’t necessarily violent; it seems the more she struggles, the worse she’s subjected to. Everything was fairly straightforward: introductions are made, the rules of the game are explained, and there are two H-scenes per heroine. After that, it either immediately ends, or there’s a talk between the protagonist and Kanae, or Rinne. It was shorter than expected, and while I wish there had been more content, it definitely didn’t feel like a mindless nukige.