Idea Factory might be best known for Neptunia, but the majority of their games are actually otome or girl’s romance titles. Aksys took a gamble and localized the Hakouki series and later Sweet Fuse: At Your Side. However, most of Idea Factory’s game have remained in Japan.
"Scarlet Fate (Hiiro no Kakera 4) is the result of a new collaboration between Idea Factory and NTT Solmare. Shall We Date is NTT Solmare’s otome game brand," Shingo Onodera from Idea Factory Japan explained. "So, it is more that Shall We Date presents Idea Factory’s Scarlet Fate for mobile. Its development and publishing are handled by NTT Solmare. We were excited to be able to work with NTT Solmare with Scarlet Fate so that we could introduce our otome games to a wider audience. We also hope to keep introducing our Otome games to the western fans whenever we have the opportunity."