Shiena seems to have a normal personality compared to the rest of the members of Class Black. Although she is somewhat scatterbrained and forgetful, she is also strict at times, as shown when directing the play in Episode 5. She says she will do anything to protect the place she belongs to. Shiena is skilled at analysis, as seen when she is able to gather information about Hitsugi and Chitaru by simply watching them during rehearsals for the class play. She is also a skilled hacker as seen in the final episode where she successfully hacks into Myojo Academy's system. 

~!When Shiena was about to submit her assassination warning letter, she was poisoned by Hitsugi and fell unconscious. Haru finds the letter beside her unconscious body, but it was invalid due to her condition and later hospitalization. Thus, her assassination attempt was counted as a fail, and she had no choice but to be removed from the competition. She is the only assassin to fail an attempted assassination without even starting it.

When she was younger she got bullied a lot. She had one friend whom she talked to on the phone called Yukarin, but one day she asked Shiena if she wanted revenge on the people who bullied her. Yukarin told Shiena about the group called Collective Dismissal and that they will give her her 'vengeance'. Shiena asks what they want for in exchange and Yukarin tells her that she must avenge someone else and Shiena accepts.!~

(Source: Akuma no Riddle Wiki, edited)

The story is set at Myoujou Academy, a private girls' boarding school. The 10th year's Kurogumi class has 12 assassins with their sights on one target, Haru Ichinose. Tokaku Azuma is a recent transfer student who is also targeting Ichinose, but she gradually develops feelings for Ichinose.
 
(Source: Anime News Network)

[Website](https://www.production-ace.co.jp/ace_talent/yukiyamada/) | [Twitter](https://twitter.com/yamada_yuki57)


Yuki Yamada is a member of the unit Dual Flare.

At Myojo Private School, an elite all-girls boarding academy, the Class Black is comprised of thirteen students, twelve of whom are assassins. Their prey is the thirteenth student, Haru Ichinose, an upbeat girl who vows to survive school and graduate unharmed! Enter Tokaku Azuma, a cold-blooded killer who transfers from another school to kill Haru. 
 
What should have been a routine hit turns into a far more complicated affair as Tokaku is unable to pull the trigger on Haru. As Tokaku copes with her budding feelings, will she decide to protect Haru's life from the other assassins or to end it before they do? 
 
(Source: Seven Seas Entertainment)

Unaired episode 13 of Akuma no Riddle released with the seventh Blu-ray/DVD volume.

A series of supplementary Akuma no Riddle side-stories and art, published by Sunao Minakata's doujin circle PURE, featuring multiple artists.
 Note : chapter & volume count includes vol.0

Shiena Kenmochi