When this teaser site first launched, it said in Japanese "Young girls + Gust = new project" and I promptly bought a new desk to put my head through when stereotypes played themselves out anew before my disbelieving eyes.
Against the grain (or at least against what we tend to notice), it actually appears to just be a game that features young girls as protagonists, not that features them getting undressed and/or spied upon. Well then!
Coming to PS3, PS4, and PlayStation Vita, Yoru no Nai Kuni is an action RPG by Gust, the makers of the Atelier series. When I saw the name, my mind quickly thought of Ni no Kuni, but no, this game is in no way connected to Level-5's PS3 RPG.
Yoru no Nai Kuni comes out Aug. 27 in Japan, with no international dates yet announced.