I've heard of it, Maika (the company that made the series) made a lot of eroge focusing on female sentai groups. While most of these have corruption scenes (usually only in bad endings) the Justice Blade series focuses entirely on it.
From what I've gathered, the series' plot focuses on the main villian, who realizing that his henchmen and monsters-of-the-day don't stand a chance against the heroes, comes up with a scheme to capture and brainwash one of the members (you choose which one) and sends her to take down the others and brainwash them as well.
I recall several years ago someone on the collective forum was interested in making a translation patch for the first game, though sadly nothing came out of it.
averageguy17 said:
Hey, is there an english translation of that game? I've tried to find it but most sites seem kind of shady and I'm not sure who to trust.
Yeah, the first Prison Battleship game was fully translated by the now defunct DarkTranslations.
It's a shame they closed down, as they were planning to translate several other corruption based games (The first and third Kansen games and Mindead Blood).