Kuroko no (hi)Album Oneesama no HIMITSU ♥ ~Kaizokuban~ (黒子の(秘)アルバム お姉様のHIMITSU 海賊版 Kuroko no (hi)Album Oneesama no HIMITSU ♥ ~Kaizokuban~?), translated as Kuroko's SECRET Album of Oneesama Bootleg is a Toaru Kagaku no Railgun artbook featuring art of Misaka Mikoto by various artists. It was released by ASCII Media Works in 2010. It is named after the album found in episode 2 of Toaru Kagaku no Railgun.