The Testament of Sister New Devil: Burst

新妹魔王の契約者 BURST (Shinmai Maou no Testament Burst)

6.8(236,278)

MAL Score

Ranked #6145

Popularity #624

Action
Ecchi
Supernatural
Harem

Episodes: 10
Duration: 23 min per ep
Aired: Oct 10, 2015 to Dec 12, 2015
Status: Finished Airing

Synopsis

Basara Toujou’s life only gets more complicated as he continues to shield his step-sisters, Mio and Maria Naruse—both demons—from those determined to seize Mio’s power. With political unrest escalating in the demon realm, the threats around them grow sharper and less predictable.

When a messenger delivers a summons demanding Mio’s presence in the demon realm, she heads there with her companions despite the obvious danger. On hostile ground, Basara is forced to push his limits, drawing strength through erotic rituals as he fights to accomplish what seems impossible and keep everyone safe.

Otaku Consensus

Burst is a polarizing but purposeful sequel: Hisashi Saitou and Production IMS compress the material into a rapid 10-episode cour, letting the demon-realm political arc and Yasuharu Takanashi's battle scoring hit harder than the series' reputation implies. The adaptation's strength is its refusal to dilute Tetsuto Uesu's ecchi-supernatural identity; its recurring weakness is exactly that refusal, as many viewers feel the plotting becomes scaffolding for boundary-pushing nudity and ritualized harem scenes.

Why You Should Watch

Watch Burst if you want the High School DxD brand of supernatural harem excess pushed harder, shorter, and less coy. The 10-episode format wastes little time: Production IMS keeps the focus on close-quarters magic, sword and spear clashes, transformation beats, and character reactions rather than sprawling lore dumps. It scratches the same itch as DxD or Sekirei for viewers who like battle power-ups tied directly to romantic and sexual tension, with a darker demon-politics flavor and a succubus-driven sense of provocation. If your ideal ecchi sequel is more plot discipline and less skin, this is the wrong door; if you want uncensored-feeling intensity, a likable male lead, and Yasuharu Takanashi battle music treating ridiculous scenes with operatic seriousness, Burst knows exactly what table it is setting.

Key Characters

B
Basara Toujou(VA: Yuuichi Nakamura)
Basara stands out because fans describe him as a likable, active harem lead rather than a passive audience insert, and Nakamura gives the protector role enough grit to sell the action beats.
M
Mio Naruse(VA: Ayaka Asai)
Mio's appeal comes from the clash between heir-to-danger supernatural status and easily flustered harem chemistry, making her both the emotional anchor and the pressure point of the sequel.
M
Maria Naruse(VA: Kaori Fukuhara)
Maria is the show's succubus-maid pressure valve, the character most responsible for turning supernatural rules into ecchi set pieces instead of simple exposition.
Y
Yuki Nonaka(VA: Sarah Emi Bridcutt)
Yuki gives the ensemble its cool-headed counterweight, bringing a sharper warrior presence to a cast otherwise defined by explosive demon power and erotic chaos.

What Makes It Stand Out

1
Production IMS delivers Burst as a compact 10-episode sequel, aired from October 10 to December 12, 2015, which makes the escalation feel faster than a standard 12 or 13 episode TV cour.
2
The series' ecchi identity is not incidental: AniList tags it with Nudity at 93%, Female Harem at 92%, and Succubus at 77%, matching the review consensus that Burst pushes closer to hentai territory than many TV ecchi titles.
3
Yasuharu Takanashi's music gives the fights a larger-than-life shonen charge, a notable contrast with scenes that are structurally built around harem ritual and fanservice escalation.
4
Burst leans on a broader action vocabulary than its reputation suggests, with AniList tagging Magic at 90%, Super Power at 93%, Henshin at 79%, Swordplay at 79%, and Spearplay at 79%.
5
Its reception profile is unusually clear: 236,178 MAL votes and a #624 popularity ranking show wide visibility, while a 6.78 score and #6147 rank underline how divisive its explicit genre priorities remain.

Fun Facts & Trivia

Fun fact 1: The core adaptation pipeline pairs original story creator Tetsuto Uesu with series composition writer Sumio Uetake, helping explain why the TV version keeps the source's provocative ecchi-supernatural balance rather than sanding it down.
Fun fact 2: Yoshihiro Watanabe handled character design, while Ryouka Kinoshita served as art director and Saaya Kinjou handled art design, splitting the show's visual identity between character appeal and demon-world atmosphere.
Fun fact 3: The sound side was divided among Yasuharu Takanashi as composer, Shunichi Uemura as music producer, and Tsuyoshi Takahashi as sound director, a staff structure that separates score production from overall audio staging.
Fun fact 4: AniList users rate Burst at 65/100 with 1,004 favourites, closely echoing its MAL reputation as a highly watched sequel that inspires more genre loyalty than broad critical approval.
Fun fact 5: Yoshiaki Kimura is credited for editing, an especially relevant role for a sequel that compresses action, harem comedy, nudity-driven set pieces, and supernatural politics into only ten episodes.