According to the official twitter of B's Log magazine, Idea Factory's otome game "Hiiro no Kakera
" was announced to get an anime adaptation at Otomate Party 2011. Details of the anime will be revealed in the September issue of the magazine to be released on July 20th.
Hiiro no Kakera game official website
A manga adaptation "Hiiro no Kakera - Mezame no Toki
" had been serialized in the magazine.
Source: B's Log official twitter
Hiiro no Kakera