Shinmai Maou no Testament
The Testament of Sister New Devil
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Shinmai Maou no Testament

Alternative Titles

English: The Testament of Sister New Devil
Synonyms: Shinmai Maou no Keiyakusha
Japanese: 新妹魔王の契約者〈テスタメント〉


Volumes: 13
Chapters: 75
Status: Finished
Published: Sep 29, 2012 to Mar 31, 2021
Genres: ActionAction, EcchiEcchi, FantasyFantasy, RomanceRomance, HaremHarem, SupernaturalSupernatural
Authors: Uesu, Tetsuto (Story), Ookuma, Nekosuke (Art)
Serialization: None


Score: 7.481 (scored by 13431,343 users)
1 indicates a weighted score.
Ranked: #26992
2 based on the top manga page. Please note that 'R18+' titles are excluded.
Popularity: #2063
Members: 6,861
Favorites: 106
Ranked #2699Popularity #2063Members 6,861
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Volumes: /13
Chapters: /75
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"Hey, you said you wanted a little sister, right?" First year high school student, Toujou Basara, was suddenly asked by his father and fell into a state of panic. On top of that, the eccentric father told him he will be getting remarried. He then departed overseas after bringing Basara two beautiful step-sisters. But Mio and Maria's true forms are actually the newbie Demon Lord and a succubus!? Basara was almost entered 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 situation 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!

(Source: MU)


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More reviewsReviews

Feb 22, 2020
Mega14343 (All reviews)
I don't know how you arrived here. Maybe you came from the anime and wanted to check the original material out, or maybe you already read a Light Novel like this and wanted to give another one a try. Before you decide on giving this one a go or skiping it, let me tell you what I thought of it.
The story doesn't start off too complex. The main character is a former member os the hero clan and his two addoptive sisters are from the demon clan. The main character wants to protect his family, and so they enter something called a Master-Slave Contract in read more

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Japan's Yearly Manga & Light Novel Rankings for 2015

Japan's Yearly Manga & Light Novel Rankings for 2015

Here are the manga and light novel sales rankings for the fiscal year of 2015 (November 17, 2014 - November 22, 2015). Manga Sales by Series *1. 14,102,521 One more

Japan's Yearly Manga & Light Novel Rankings for 2015 (First Half)

Japan's Yearly Manga & Light Novel Rankings for 2015 (First Half)

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Recent Forum Discussion

Is the 13th volume translated?
Calvita - Jul 16
2 replies by Calvita »»
10 hours ago
Poll: Shinmai Maou no Testament Volume 13 Discussion
Hlebka - Apr 4
1 replies by superior13 »»
Apr 4, 12:30 PM