The North American publisher Yen Press has confirmed with ANN that it will release the first volume of Yoshiki Tonogai's Doubt psychological horror manga in April 2013. Yen Press will be releasing the manga in omnibus form, and the first volume will retail for US$18.99.
Finally someone licensed this. I've been eyeing the scans for some time, but I'm glad it's getting an official physical release so I don't have to anymore.