“Basara gains demon step-sisters, forms reversed master contract, and battles tribes to protect Mio in ecchi action drama.”
The Testament of Sister New Devil
新妹魔王の契約者〈テスタメント〉
Would You Love or Hate This?
AI-powered analysis tailored to your taste
Based on your preference for character-driven stories with layered emotional arcs, this title's exploration of identity and belonging would deeply resonate. The pacing mirrors series you've rated highly, and its thematic depth aligns with your appreciation for nuanced storytelling...
However, the slow initial episodes might test your patience given your history of dropping shows that don't hook you early. The art style shift in the middle arc could also be a concern...
Synopsis
Basara gains demon step-sisters, forms reversed master contract, and battles tribes to protect Mio in ecchi action drama.
"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)
What people say
Community consensus
Derived from 4 sampled reviews
What 4 readers settled on.
Mostly aligned
σ 1.48 · some divergence
—
Not enough recommend signal yet
↑ 2.25
Running avg · Feb 2020 → Aug 2024
- 10 “I watched the anime and read the manga but never read the LN. Having taken an interest for so long I finally read the LN. Honestly, the ecchi is quite good. I don't know why some reviewers say it's...”
- 8 “Having finally read the last volume nearly one year after it came out, I can finally make a conclusive review on this series that feels I have been following for so long. I came across Shinmai Maou...”
- 9 “tl;dr: An action harem series with a lot of ecchi, a well written plot, and a well fleshed out cast of characters with great character and relationship arcs. This series begins with Toujou Basara...”
Read Order & Related
Explore the The Testament of Sister New Devil universe
Cast
See all →Gallery
See all →If you stay for this, you'll stay for these
See all →The community pairs this with
See all →Publication slate
A Light novel Publication
- Format 75 × 13 ch × vol
- Total read 10h 00m approx
- Published Sep 2012 – Mar 2021
- Source Light novel media type
- Ref. BS-M21526 catalog