Kasuka na Hisoka na Tashika na Mirai

 is the 15th single released by sphere.

CD

 * 1) Kasuka na Hisoka na Tashika na Mirai (微かな密かな確かなミライ)
 * 2) synchronicity
 * 3) Kasuka na Hisoka na Tashika na Mirai (微かな密かな確かなミライ) (Off Vocal)
 * 4) synchronicity (Off Vocal)

Limited Edition DVD

 * 1) Kasuka na Hisoka na Tashika na Mirai (Music Video Clip)