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The Best Episodes of The Testament of Sister New Devil Season 1

Every episode of The Testament of Sister New Devil Season 1 ranked from best to worst. Discover the Best Episodes of The Testament of Sister New Devil Season 1!

Binge this in 4h 54m•Peaking at 7.5/10

Toujou Basara is a high school student whose father has suddenly just remarried. His father then departs overseas leaving Basara with two new beautiful step-sisters. Little does he know, his new sisters, Mio and Maria

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Episode Rankings

  1. #1 Fan Favorite
    The Testament of Sister New Devil Season 1 Episode 1 - The Day I Got A Little Sister
    7.0/10(156 votes)

    #1 - The Day I Got A Little Sister

    S1:E1

    Thanks to his father's sudden remarriage, Toujou Basara finds himself with two beautiful new step-sisters. Their names are Naruse Mio and Maria. Mio wakes him up in the morning, while Maria stands in the kitchen wearing a suggestive outfit...

    Director:Tatsuma Minamikawa
    Writer:Unknown

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  2. The Testament of Sister New Devil Season 1 Episode 2 - First Contract Between Servant And Master
    7.4/10(113 votes)

    #2 - First Contract Between Servant And Master

    S1:E2

    As daughter of the former demon lord, Mio's foster parents were slain by powerful demons after her life. Still seeking to slay her, Basara reveals himself as a member of the hero clan--an enemy of the demons--and vows to protect Mio as a member of his family.

    Director:Kiyomitsu Sato
    Writer:Unknown

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  3. The Testament of Sister New Devil Season 1 Episode 3 - Reunion and a Gap in Trust
    7.3/10(112 votes)

    #3 - Reunion and a Gap in Trust

    S1:E3

    Basara's childhood friend Nonaka Yuuki warns him not to get involved with Naruse Mio any longer. She is a fellow member of the hero clan, and the one charged with observing Mio. She claims that Mio will bring great disaster, but Basara proclaims that he will protect Mio as a girl on his own.

    Director:Takashi Ando
    Writer:Unknown

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  4. The Testament of Sister New Devil Season 1 Episode 4 - Until Sadness Reaches Zero
    7.0/10(106 votes)

    #4 - Until Sadness Reaches Zero

    S1:E4

    Basara suffers a deep wound in the battle against the white-masked man after Mio's power. Mio regrets getting Basara involved, and challenges the white-masked man to battle on her own. Meanwhile, in order to protect Mio, Basara resolves to use the "forbbiden art" he sealed away after the events of his past. What was the tragedy that visited the hero village and Basara?

    Director:Naoya Ando
    Writer:Unknown

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  5. The Testament of Sister New Devil Season 1 Episode 5 - A Little Sister's Morning Demon Lording
    6.8/10(105 votes)

    #5 - A Little Sister's Morning Demon Lording

    S1:E5

    With the battle against the white-masked man settled, they returned to their bawdy daily life. Basara wakes up with his hand groping Maria's butt, he runs into a naked Mio when he enters the bathroom, and Yuki sneaks into the bath with him. The master-servant pact lying at the heart of everything. Accoring to Takigawa, his classmate and the white-masked man, the pact between Basara and Mio holds another secret. Meanwhile, Basara's childhood friend Yuki invites him out on a date...

    Director:Shinsuke Yanagi
    Writer:Unknown

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  6. The Testament of Sister New Devil Season 1 Episode 6 - Bearing Growing Emotions
    7.1/10(104 votes)

    #6 - Bearing Growing Emotions

    S1:E6

    Basara goes on a date with Yuki. Unaccustomed to the shopping center, when the two of them are overwhelmed by a clerk's sales talk, Mio stops following to rescue them.

    Director:Yoshito Mikamo
    Writer:Unknown

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  7. The Testament of Sister New Devil Season 1 Episode 7 - The Depths of Love and Hatred
    6.9/10(100 votes)

    #7 - The Depths of Love and Hatred

    S1:E7

    Basara leads Mio to higher peaks as he pursues pleasure with the use of syrup. With their master-servant pact reaching a new level, they both bring their full might to face the ones trying to eliminate Mio: Takashi and Kurumi.

    Director:Takashi Ando
    Writer:Unknown

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  8. The Testament of Sister New Devil Season 1 Episode 8 - Erotic Succubus Out of Control
    7.3/10(100 votes)

    #8 - Erotic Succubus Out of Control

    S1:E8

    Ten days pass since the battle with Takashi and others. Although the battle ended with reconciliation, Yuki returned to the hero's village. ...or she was supposed to, but when Basara returns home, he finds Yuki in an apron!

    Director:Yoko Fukushima
    Writer:Unknown

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  9. The Testament of Sister New Devil Season 1 Episode 9 - Merits and Demerits of Master and Servant
    7.5/10(102 votes)

    #9 - Merits and Demerits of Master and Servant

    S1:E9

    Basara and Yuki begin the ceremony to form their pact. Clad in a bustier and garter belt, Yuki was raring to go for it, but she refused to forge the pact normally, and suffered the same succubus curse as Mio.

    Director:Koji Yoshikawa
    Writer:Unknown

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  10. The Testament of Sister New Devil Season 1 Episode 10 - Plaintive Betrayal
    7.4/10(96 votes)

    #10 - Plaintive Betrayal

    S1:E10

    Mio has been captured by Zolgia following Maria's betrayal. Basara too is captured by Lars and brought to Zolgia's mansion. Lars' goal is to exchange Basara for Mio. He explains that he's only doing his duty as Mio's observer, but negotiations fail, and Zest slays him.

    Director:Yu Sakurai
    Writer:Unknown

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  11. The Testament of Sister New Devil Season 1 Episode 11 - Epsionage... What Lies After
    7.2/10(95 votes)

    #11 - Epsionage... What Lies After

    S1:E11

    Strength as a human, the power to rend evil--With the power inherited from his father, Tojou Jin, Basara faces off against Zolgia. Basara is driven by the desire to protect his precious family. That desire gives him strength, and even as Zolgia pushes him to the edge, he rises without breaking. However, even Basara eventually runs out of strength facting that all too powerful might. His mind in despair, he's unable to escape from Zolgia's dominion...

    Director:Yushi Suzuki
    Writer:Unknown

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  12. The Testament of Sister New Devil Season 1 Episode 12 - For This Night, This Moment
    7.5/10(94 votes)

    #12 - For This Night, This Moment

    S1:E12

    Everyone is trapped inside the body of the demon realm's most dangerous creature, a beast capable of infinitely multiplying until it swallows the entire world. Dimensionally cut off, the only remaining option for Basara and the others is to completely eliminate this dangerous creature's vital core.

    Director:Yushi Suzuki
    Writer:Unknown

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Season 1 Ratings Summary

"The Day I Got A Little Sister" is the best rated episode of "The Testament of Sister New Devil" season 1. It scored 7/10 based on 156 votes. Directed by Tatsuma Minamikawa and written by Unknown, it aired on 1/7/2015. This episode is rated 0.4 points higher than the second-best, "First Contract Between Servant And Master".