Riddle Story of Devil 1st Promotional Video

Akuma no Riddle, or Riddle Story of Devil, is an anime series adapted from a manga written by Yun Koga and illustrated by Sunao Minakata.
At Myōjō Academy, all the students in the 10th year’s Kurogami class are assassins with one target: Haru Ichinose. Recent transfer student Tokaku Azuma is one of the assassins, but she gradually develops feelings for Haru.