- Country: Japan
- Genres: Action, Animation, Thriller
- Release: 2014-04-03
- Director: N/A
- Writers: N/A
- Language: Japanese | English
- Stars: Ayaka Suwa , Juri Aikawa , Alexis Tipton , Jamie Marchi , Morgan Berry , Lauren Landa , Yoshino Nanjo , Azumi Asakura , Takahiro Sakurai , Ricco Fajardo
- Runtime: 24 min
- Awards: N/A
- AKA: 悪魔のリドル (Japan) , Riddle Story of Devil (United States of America) , Akuma no Riddle , Riddle Story of Devil (Israel) , Riddle Story of Devil (United Kingdom) , Akuma no Riddle (Germany) , Riddle Story of Devil
- Plot: Tokaku Azuma is a heartless teenage assassin on a mission of death. She's been sent to a prestigious, all-girls boarding school to compete in an assassination game against eleven other beautiful killers. There heinous mission: send the innocent and cheerful Haru Ichinose to an early grave.
- IMDB:tt3396572
Riddle Story of Devil Cast · · · ALL
Ayaka Suwa
Tokaku Azuma (voice)
Hisako Kanemoto
Haru Ichinose (voice)
Yoshino Nanjo
Nio Hashiri (voice)
Azumi Asakura
Isuke Inukai (voice)
Sachika Misawa
Chitaru Namatame (voice)