This Wiki contains SLIGHT NUDITY, EXPLICIT CONTENT and SPOILERS from the series! Read at your own risk.
- Shinmai Maou no Keiyakusha Wiki is dedicated to the Light Novel series The Testament of Sister New Devil (新妹魔王の契約者『テスタメント』) written by Uesu Tetsuto and illustrated by Ōkuma Nekosuke (Nitro+) with six volumes released since September 2012. The manga adaptation is written again by Uesu Tetsuto but is drawn by Miyakokasiwa and has been serialized since May 2013. Another seinen version of the manga is illustrated by Fumihiro Kiso and began serialization in February 2014. An anime adaptation will be aired in 2015, with it being directed by Hisashi Saito.
"Hey, you said you wanted a little sister, right?" High school freshman, Basara Tojo, was suddenly asked this question by his father who tells him that he's getting remarried. He then departed overseas after bringing Basara two beautiful step-sisters; Mio and Maria. But the true forms of the two girl's are actually a newbie Demon Lord and a succubus! Basara was almost forced into a master and servant contract with Mio, but a "reversed" contract was formed by mistake, and Basara is now the master. Moreover, Basara is being hit by ecchi situations one after another due to the contract, but Mio's life is being pursued by other demon tribes and hero tribes!! The most powerful contractor's desire action drama begins!
- Light Novel Volume VI was released on the 1st of September! New!
- Manga Volume 3 was released on the 26th of August! New!
- The anime of The Testament of Sister New Devil is set to air in 2015!
- Volume 2, Chapter 3 of the Light Novel has been translated by Baka-Tsuki!
- Completion of Chapter 4 is at:
- Shinmai Maou no Keiyakusha Wiki has been affiliated with High School DxD Wiki and Madan no Ou to Vanadis Wiki!
- Yuuki Nonaka (野中 柚希 Nonaka Yūki) is a member of the Hero Tribe in Japan and a childhood friend of Basara Tojo. She is one of the survivors of the Bryhildr incident five years ago and is currently the observer of Mio Naruse, a rank S- surveillance target. Yuuki is in the same class as Basara and Mio in Hijirigasaka Academy, being the Class Representative. The Hero is a Skill type fighter with abilities on a B+ rank and uses the spirit sword Sakuya. She is the sister of Kurumi Nonaka and one of the main female protagonists of the series.
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The following contains spoilers. You have been warned, click here to view contents.
- There are many Hero Tribes across the world, each with their own territory!
- Basara was banished for disintegrating the remains of his dead allies!
- Jin was once heralded as the strongest Hero!
- Mio could only use magic after Wilbert's death!
- Gods exists within a Tribe in Heaven with a high-ranking ruler!
Who is your favorite member of Basara's harem?