Akuma no Riddle Wiki

Tokaku Azuma (東 兎角; Azuma Tokaku) 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.


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.


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.

Skills and Abilities

She is skilled with using knives, whether it's throwing or fighting with them. She also has exceptionally quick reflexes, agility and speed. In addition, she uses a more direct means of assassins, although she hasn't actually killed anyone yet. Her physically and special capabilities are above average, and has demonstrated an ability where she can know how an assassin smells or even locate the hidden room at the library, she was even able to locate all of Kōko Kaminaga's bombs which proves that she is well aware of her surroundings.


Tokaku is considered the protagonist of the series, with Haru as the deuteragonist. Tokaku is a competent and strong person but lacks certain social skills to interact with others, coming off extremely cold and unapproachable. She often plays into this as well, being very brusque in her manner of speech. However, she hides a vulnerable side to her.


Her clan is a well known family of assassins, the Azuma. They say that the east's Azuma and the west's Kuzunoha are two assassination clans that existed in the country since ancient times.


Baby Tokaku

Tokaku's mother died shortly after giving birth to her, leaving her under the care of her grandmother. From an early age, she was trained in the assassination arts of the Azuma. Her mother was supposedly a reputed practitioner within the Azuma, whereas her aunt, Mako, was a disgrace who could not become an assassin. When Tokaku was born, her mother pled for her aunt to ensure that Tokaku did not grow up like she did.

Therefore, Mako tried to persuade a young Tokaku to leave her grandmother's house and come live in the city with her. Tokaku's grandmother intervened and called Mako "the disgrace of the Azuma Clan". Mako then took more drastic measures and tried to spirit Tokaku away from the Azuma household. While they are escaping, Mako takes Tokaku to the family shrine where she tells her that her mother will always be watching over her, preventing her from killing. Unfortunately, they were caught by her grandmother before they could escape. Mako is killed before Tokaku's eyes.

At some point, Tokaku's grandmother dies and she is enrolled in Academy 17 before being transferred to Myojo Academy.

Academy 17

Tokaku was enrolled in Academy 17 for an undetermined amount of time before the events of the Black Class. Her grandmother is suspected to have died before this, and thus her tutelage under Kaiba began. Within Academy 17, Tokaku is shown to be heads and shoulders above her peers in physical prowess. In the anime, she is the only one to pass an obstacle course. In the manga, she is shown to perfectly strike a target during practice.

Black Class

Tokaku is enrolled in Myoujou Academy by Kaiba, who says he did so just because she is an idiot. Tokaku shortly meets the rest of the class because she is appointed the temporary rollcall manager. She notes that many of the students in their class have scents, but that of Haru Ichinose is most striking.

During Isuke Inukai's attack on Haru, it is revealed that Tokaku has never killed anyone before, despite possessing very useful skills as an assassin.

Assassination Attempt

After Black Class

Manga-Anime Differences


  • Her given name Tokaku (兎角) means "rabbit's horn" while her last name Azuma (東) means "east".
    • Her given name can be a reference to "tonikaku", a adverb that means "anyway" or "in any case"..
  • Her favorite food is curry and her least favorite one are prunes.
  • Her cup size is deceptive, according to Yun Kouga's comment in manga volume 1 .
  • She is the only known heir and the only known still living member of the Azuma Clan.
    • It was stated that Tokaku has no living relatives anymore, which suggests that her grandmother and aunt died at some point while taking care of her.
  • She has never seen her father's face as assumed that he died by unknown cause.
  • She’s born in Nagano (Matsumoto).
  • She sleeps an average of 4 hours per night.
  • Kouga Yun said Tokaku fell in love with Haru at first sight.
  • Her mother died shortly after she was born, Tokaku was raised by her grandmother and aunt instead.
    • Her given name Tokaku means Something that's impossible (This term may refer to the subject in a positive meaning but also can be intended with a negative meaning like Something that shouldn't even exist how she does interpret her given name by herself at the begin of the story), it was given to her by her grandmother right in the moment as she was born