Akuma no Riddle: Riddle Story of Devil has been adapted into a hit anime series, which was streamed by FUN Imation and will be released on home video in 2015. Each volume contains kinetic artwork, brimming with action and drama, and includes colour inserts. At Myojo Academy, an elite all-girls boarding school, the Class Black is comprised of thirteen students, twelve of whom are assassins. Their prey is the thirteenth student, Haru Ichinose, an upbeat girl who vows to survive school and graduate unharmed! Enter Tokaku Azuma, a cold-blooded killer who transfers from another school to kill Haru. What should have been a routine hit turns into a far more complicated affair as Tokaku is unable to pull the trigger on Haru. As Tokaku copes with her strange, budding feelings, will she decide to protect Haru's life from the other assassins or to end it.
Yun Kouga is best known as the creator of Loveless and is a well-known doujinshi author and artist. Kouga is also the author of Akuma no Riddle: Riddle Story of Devil. Sunao Minakata is best known as the artist of Akuma no Riddle: Riddle Story of Devil.