The Testament of Sister New Devil OVA

新妹魔王の契約者〈テスタメント〉第13話「東城刃更のハードスウィートな日常」 (Shinmai Maou no Testament: Toujou Basara no Hard Sweet na Nichijou)

6.9(70,719)

MAL Score

Ranked #5403

Popularity #1937

Action
Ecchi
Supernatural
Harem

Episodes: 1
Duration: 25 min
Aired: Jun 22, 2015
Status: Finished Airing

Synopsis

Packaged with the eighth volume of the *Shinmai Maou no Testament* light novel, *The Testament of Sister New Devil OVA* delivers two bonus stories with a supernatural, ecchi edge.

In the first segment, Maria causes her usual trouble by testing a prototype succubus video camera, hoping to capture one of Mio’s erotic dreams on film. The second follows Basara after Hasegawa-sensei invites him to her apartment for dinner—only for the evening to turn out far more “welcoming” than he anticipated.

Otaku Consensus

Otaku Consensus: This OVA lands exactly where Shinmai Maou’s core audience wants it: brisk two-segment pacing, Production IMS’s consistent TV-era polish, and source-bundle fan service that treats ecchi escalation as the main event. Its weakness is just as clear: viewers looking for meaningful plot movement or subtle character drama will find the harem mechanics and nudity-first priorities too familiar.

Why You Should Watch

If your ideal Shinmai Maou add-on is the franchise at full ecchi pressure with no tournament detour or lore homework, this OVA is the efficient pick. It scratches the same itch as High School DxD and To LOVE-Ru Darkness: supernatural rules exist mainly to escalate intimate comedy, and the harem energy is treated as the feature, not an interruption. The appeal is precision: two compact segments, a Production IMS finish viewers found consistent, and a level of nudity that AniList effectively flags at near-maximum intensity. Watch it after the first TV run when you want more time with Maria, Mio, Yuki, Chisato, and Basara in a bonus episode designed for payoff rather than onboarding new viewers.

Key Characters

C
Chisato Hasegawa(VA: Yuu Asakawa)
Chisato stands out in this OVA because the special elevates her from school-adult presence into one of the franchise’s most talked-about fantasy-focus characters.
M
Maria Naruse(VA: Kaori Fukuhara)
Maria is the chaos catalyst fans expect, pushing the OVA’s succubus-flavored comedy into its most shameless and self-aware territory.
M
Mio Naruse(VA: Ayaka Asai)
Mio remains the series’ high-voltage embarrassment engine, balancing demonic heroine status with the kind of vulnerability the OVA uses for ecchi escalation.
B
Basara Toujou(VA: Yuuichi Nakamura)
Basara functions as the harem anchor whose appeal here is less new development than how naturally the special turns every supernatural setup back toward him.

What Makes It Stand Out

1
It was released on June 22, 2015 as a single OVA packaged with the eighth volume of Tetsuto Uesu’s light novel, making it a collector-style bonus rather than a standard broadcast episode.
2
The episode uses a two-part bonus-story structure, so its pacing is closer to an ecchi anthology extra than a continuation arc; that format is why it can jump directly into set-piece fan service without rebuilding the season’s conflict.
3
Production IMS handled the animation, and contemporary viewer commentary repeatedly points to the series’ consistent animation as one of its reliable strengths even when the material leans heavily into nudity.
4
AniList’s tag profile is unusually explicit for positioning the OVA: Female Harem at 100%, Nudity at 98%, and Demons, Magic, Super Power, Urban Fantasy, and Urban all at 79%.
5
Its reception numbers show a clear niche ceiling: a 6.9 MAL score from over 70,000 votes and an AniList score of 65/100 indicate a widely sampled fan-service extra that plays better to existing Shinmai Maou viewers than to general fantasy-action audiences.

Fun Facts & Trivia

Fun fact 1: The credited original story comes from Tetsuto Uesu, while Nekosuke Ookuma is credited for the original character designs, keeping the OVA visually and conceptually tied to the light novel’s core creators.
Fun fact 2: The Japanese subtitle, Toujou Basara no Hard Sweet na Nichijou, literally foregrounds Basara and an everyday-life bonus tone rather than advertising a major battle arc.
Fun fact 3: AniList lists only 363 favourites for the OVA despite strong database visibility, which fits its role as a targeted extra rather than a franchise entry viewers typically champion on its own.
Fun fact 4: A user review rated it 7/10 with mixed feelings and summed up the appeal bluntly: the OVA knew exactly what its audience came for, especially its immediate commitment to ecchi material.
Fun fact 5: Its MAL Popularity rank of #1937 is far stronger than its MAL Rank of #5403, a useful snapshot of how ecchi OVAs can attract large viewer counts without earning broad critical approval.