Completed
“Basara protects demonic stepsisters in demon realm, growing stronger through erotic pleasure to save everyone.”
The Testament of Sister New Devil: Burst
新妹魔王の契約者 BURST
6.78
5,921 rank · 429,430 viewers · 614 favorites
Action
Supernatural
Ecchi
Harem
Watch on
Crunchyroll
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...
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Honest pros & cons
Based on your library
Synopsis
Basara protects demonic stepsisters in demon realm, growing stronger through erotic pleasure to save everyone.
Basara Toujou has a hard life. He is the older step-brother to two demonic sisters, Mio and Maria Naruse, whom he protects from entitled demons looking to claim Mio's power for themselves. On top of that, rising political tension within the demon realm only makes his job more difficult. When a messenger arrives with summons for Mio to the demon realm, she and her friends go in spite of the danger. Now on the enemy's turf, Basara will have to grow stronger through erotic pleasure in order to do the impossible and protect everyone.
What people say
Community consensus
Derived from 27 sampled reviews
4.9
/10
What 27 viewers settled on.
33%
recommend
Score distribution
median 5
mode 4
σ 2.22
Agreement
Polarized
σ 2.22 · split reception
The polarity gap
5.0 pts
Recommenders 7.8 · others 2.8
Yes
No
Score over time
↑ 1.89
Running avg · Dec 2015 → Mar 2026
Snap verdicts
· shortest highly-rated reviews
- 9 “Burst nails the core Shinmai Maou formula with deliciously excessive ecchi and livelier harem antics while tightening the plot and finally giving every fighter something meaningful to do. The only...”
- 7 “This is pure, uncomplicated fun—laugh-out-loud moments, a refreshingly confident lead who skips the endless self-pity, and girls who nail their tropes without wearing out their welcome. The plot...”
- 7 “The characters remain fun and play their tropes well while maintaining consistent animation quality from the first season. However, the story feels toned down and lacks effort, representing wasted...”
Verbosity
Short · 37%
Medium · 30%
Long · 33%
Watch Order & Related
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Cast
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See all →Made by
See all credits →Production slate
- Format 10 × 23′ eps × min
- Total runtime 3h 50m all episodes
- Aired Oct 2015 – Dec 2015 Fall 2015
- Source Tv media type
- Rated R+ Mild Nudity
- Ref. BS-10442 catalog
Produced by
- Kadokawa Shoten Producer
- Nippon Columbia Producer
Licensed by
- Funimation Licensor
- Crunchyroll Licensor