About Riddle Story of Devil
Meet the 10th Black Class of Myoujou Academy. Of these thirteen students, twelve are assassins from various backgrounds who are tasked to assassinate one target - Haru Ichinose. If they succeed in their assassination, they will be granted any wish they desire. However, if they fail, they will be expelled from the class.
One of the assassins, Tokaku Azuma, suddenly decides to switch sides to become her protector. What are Haru’s chances of survival now?