From the letters on the cover, I figured this is "Kaihatsu BL Konna no Shiranai" http://www.cdjapan.co.jp/product/NEOBK-1947664
From the letters on the cover, I figured this is "Kaihatsu BL Konna no Shiranai"
http://www.cdjapan.co.jp/product/NEOBK-1947664