Also known as: 悪魔のリドル
Akuma no Riddle (悪魔のリドル, lit. Riddle Story of Devil) is a Japanese manga written by Kouga Yun and illustrated by Minakata Sunao. It started serialization in Kadokawa Shoten's Newtype magazine with the September 2012 issue. An anime adaptation directed by Kusakawa Keizō and animated by Diomedéa premiered on April 3, 2014. The series is licensed for streaming by Funimation in North America and Madman Entertainment in Australia.