The headline of the thirteenth and final volume of the light novels written by Tetsuro Uesu and illustrated by Nekosuke Ookuma, Shinmai Maou no Testament (The Testament of Sister New Devil), confirmed that the literary franchise has exceeded 3.2 million cumulative copies in circulation. .
This will be the first volume after a three-year hiatus, but also the last, and will be released on March 31 in Japan, described as follows: “A collection of short stories that were not told in the main serialization and that include additions and corrections both for previously published and for new deliveries ”.
Uesu and Ookuma began publishing the light novels through Kadokawa Publishing's Sneaker Bunko imprint in September 2012. The publisher published the twelfth volume in April 2018, and this had been described as the last in the series.
In addition to a manga adaptation by Kashiwa Miyako and other derivative works, the play inspired a twelve-episode anime adaptation produced by Production IMS studios and released in January 2015. A ten-episode second season with the same team Production was released in October 2015, followed by an OVA in March 2018.
Shinmai Maou no Testament Synopsis
Meeting your new stepsister in the bathroom isn't the best way to make a good first impression, which Basara Toujou learns the hard way. When his father suddenly brings two beautiful girls home and introduces them as his new sisters, he has no choice but to accept into his family the Naruse sisters: the busty redhead Mio and the little silver-haired Maria. But when these girls Seemingly normals reveal themselves as demons, Mio the only daughter of the former Demon Lord and Maria his trusted succubus servant, Basara is forced to reveal himself as a former member of a clan of "Heroes", sworn enemies of the demons. However, having started to worry about his new sisters, Basara decides to protect them with his powers and forms a master-servant contract with Mio to keep an eye on her. With the Heroes watching her every move and the constant threat of hostile demons, Basara has to do the impossible to protect the new members of your family. Furthermore, the protector himself hides his own dark secret that still haunts him to this day ...
Source: Official Site
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