A rather shy and mysterious-looking young woman who's a former assassin who's developed a second personality at some point in her past named Shin'ya Banba who's a quite more rude and violent personality than the actual Mahiru. Both are like two souls who share the same body, thus both never appear at the same moment throughout the plot, yet both are able to communicate with each other to a certain degree.

Mahiru is a shy and timid girl who often has trouble speaking for herself. She is easily subject to bullying, and is often defenseless. However, when the sun sets, Mahiru's alternate personality, Shin'ya Banba, appears. Shin'ya is the complete opposite of Mahiru, and refers to herself (or even himself) as "ore (俺)", a masculine term. In contrast to her host personality, Shin'ya has an aggressive and borderline insane appearance cultivated to protect Mahiru. Shin'ya is able to enter a temporary state that grants her superhuman strength, though she is unable to use it for extended amounts to time without rest. She also seemed to be excellent at tracking her targets.

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)

[Profile](http://earlywing.co.jp/talent_w/otsuboyuka.php) | [Twitter](https://twitter.com/00tsubo_yuka) | [Spotify](https://open.spotify.com/artist/43ZsqoTPYf5cc4ae3KPVuU?autoplay=true)

Yuka Ootsubo is a Japanese voice actress and singer affiliated with Early Wing. In 2014, she started her career as a singer by joining the band SmileY inc. with Vocaloid musician Yuuyu-P. She also did the voice of Vocaloid character Azuki Masaoka for V4.

__Non-anime roles:__
- Kaalaa Baunaa - Reverse 1999 (VG)

__Date of Birth:__ 1975
__Hometown:__ Neustrelitz, Germany

[Official Website](http://www.arlette-stanschus.de) | [Synchronkartei](https://www.synchronkartei.de/sprecher/3951/2)

[Twitter](https://twitter.com/mikaelajokrantz)

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: Includes volume 0.

Mahiru Banba