Tokaku Azuma

Tokaku Azuma is the primary main protagonist of the manga and anime series Akuma no Riddle. She is a former student of the 10th year's Black Class at Myōjō Academy, registered in a competition to try to kill Haru Ichinose, with the reward to be anything one could wish for. She ends up defecting to Haru's side, aiming to protect her instead. At first glance she looks more like an assassin who would kill anyone for anything. She is normally shown wearing a white short sleeved collar shirt with a plaid tie, a plaid skirt and tall light brown boots. Her hair and eyes are both blue.

She is a distant and cold girl, who dislikes when people comes too close to her and she especially hates it when people call her by her first name, with the exception of Haru. However, she eventually grows to care for Haru over time.