Ike (Artist), IDEA FACTORY, DESIGN FACTORY, Otomate, Shirahana no Ori ~Hiiro no Kakera 4~ Official Visual Fan Book, Shirahana no Ori ~Hiiro no Kakera 4~, Gentouka, Oki no Akifusa, Kuuso no Mikoto, Kodo no Mae, Akishino no Furutsugu, Braided Bang, Scarlet Fate: Fragments Of The Past