Tokaku Azuma is the main protagonist of the anime series Akuma no Riddle. She is a highly skilled assassin who is known for her calm demeanor and exceptional combat abilities. Sent to Myoujou Academy as part of a deadly game, Tokaku's mission is to assassinate a fellow student, Haru Ichinose. However, she soon becomes Haru's protector instead. Throughout the series, Tokaku's mysterious past and internal conflicts are explored, highlighting her struggle between following orders and her own sense of morality.