Farran said: Looks like his Refresh doujin where the girls punish dudes. Probably will end the same way too with role reversals.
I saw the sneak peek on Fantia, and yes, that's pretty much it: couple of high school girls go around trains and bait molesters, then have them reported and apprehended. Then the molesters, shamed by society, fired from their jobs and abandoned by their families, take revenge on the aforementioned high school girls by trapping them in a train car and raping the hell out of them.
I saw the sneak peek on Fantia, and yes, that's pretty much it: couple of high school girls go around trains and bait molesters, then have them reported and apprehended. Then the molesters, shamed by society, fired from their jobs and abandoned by their families, take revenge on the aforementioned high school girls by trapping them in a train car and raping the hell out of them.