What the hell is this? I can't ever recall seeing a JP PC game with this kind of B&W dither look.
http://ameblo.jp/songoski/entry-10728172626.html The weird thing is that at first it looks like a graphic adventure remake of Casablanca (might have to click SHow Picture for these)
only after a page or so of generic looking houses and rooms it suddenly turns into some bizarre steampunk thing
possibly about someone time traveling back into the world of Casablanca?? the google translation of the page only makes a passing reference to solving a murder "beyond time and space"(!!!). but yeah it sounds like they deliberately used some kind of black & white hardware restriction to go for a kind of noir monochrome effect and ended up looking like some french comic thing
actually on the subject of cool black&white dithered pixel work i've been reading some of the Centipede Dreams webcomic and it's pretty excellent
http://cargocollective.com/centipededreams#