Shinmai Maou no Testament
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The Testament of Sister New Devil (新妹魔王の契約者 Shinmai Maou no Tesutamento?) is a Japanese light novel series by Tetsuto Uesu with illustrations by Nekosuke Ookuma. Four volumes have been published by Kadokawa Shoten since 2012 under their Kadokawa Sneaker Bunko imprint. A manga adaptation has been serialized in Kadokawa Shoten's Shounen Ace magazine since May 2013. A second manga adaptation has been serialized in Hakusensha's Young Animal Arashi magazine since February 2014. An anime adaptation has been announced, and it will premiere in 2015.