Tokaku Azuma ia the protoganist of the yuri series Akuma No Riddle. An intelligent and cold girl.
- Despite being one from the class of assassination called(Black Class) targeting Haru, she kept on saving her from each assassin and cares about her safety, then she fell in love with her without noticing until later.
- She was instantly drawn to Haru after encountering her in the classroom in episode 1.
- In the manga, She notes Haru's smell of a "sunny place".
- She kept the strap Haru gave her as a present, and when Nio and Isuke threw theirs away she caught them all.
- When she get up after she fainted she held Haru's hands with tears in her eyes in affection. *Her wish at the last episode was for Haru's graduation, granting her only wish of which Haru truely wanted.
- Throughout the series, she has indured a lot of risks, fights and pain just for Haru.
- When she saw Haru in a gown, she turned her shy face away.
- She became Haru's guardian at the last chapter of the manga.
- She doesn't want Haru to get away from her, and she won't let anyone lays a finger on her.
- In the opening and throughout the anime after episode 2, Tokaku's motto to herself is that she 'wont let anyone touch her' (Haru).