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The Best Episodes of The Testament of Sister New Devil

Every episode of The Testament of Sister New Devil ranked from best to worst. Let's dive into the Best Episodes of The Testament of Sister New Devil!

Binge this in 8h 55m•Peaking at 8.0/10

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
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    The Testament of Sister New Devil Season 1 Episode 9 - Merits and Demerits of Master and Servant
    8.0/10(3 votes)

    #1 - 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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  2. The Testament of Sister New Devil Season 2 Episode 2 - Suspicions Deepening Within Mysteries
    8.0/10(3 votes)

    #2 - Suspicions Deepening Within Mysteries

    S2:E2

    The day of the sports festival is finally here. Though Basara remains cautious of the mysterious enemy who manipulates people with magic, he happily enjoys the sports festival with Mio and Yuki as the three of them compete in the four-legged-race and enjoy their youth getting entangled and sweaty with each other. Meanwhile, Kurumi, who was placed in charge of guarding the school, discovers a suspicious individual. At almost the same time, a giant twister forms on the sports field. Basara fights to protect the students... but an unexpected individual appears!

    Director:Yoshihiko Iwata
    Writer:Sumio Uetake

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  3. The Testament of Sister New Devil Season 2 Episode 7 - Between Entwining Plots and Desires
    8.0/10(2 votes)

    #3 - Between Entwining Plots and Desires

    S2:E7

    Basara and the others finally face the current demon lord, Leohart. Leohart's confidence in his strength fills the air as he welcomes them in without any tricks. Can they really beat him? After Maria encourages them to do what they can for now, Basara commands Mio, Yuki, Maria, Kurumi, and Zest to strip for him. Using items full of aphrodisiacs, they lick, molest, and entwine together...

    Director:Masato Kitagawa
    Writer:Yasunori Yamada

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  4. The Testament of Sister New Devil Season 2 Episode 8 - Those Contending For The Future
    8.0/10(2 votes)

    #4 - Those Contending For The Future

    S2:E8

    The group battle between Leohart and Ramsus's forces finally begins. After Mio wins the first match, Maria enters the arena for the next round. Her opponent is Lars. Maria uses her enormous power to face him in close combat, but she fails to overcome the gap in experience and magic power, and gets driven into a corner by Lars' clever attackes. What does Maria pull out in hopes of overturning the battle...? Meanwhile, the demons lay a cowardly trap for Kurumi.

    Director:Takashi Ando
    Writer:Sumio Uetake

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  5. The Testament of Sister New Devil Season 2 Episode 9 - Beyond the Endless Dream
    8.0/10(2 votes)

    #5 - Beyond the Endless Dream

    S2:E9

    The only remaining match of the tournament is the duel between leaders, Basara vs Leohart. Basara finally appears after his long time in hiding, and faces off against Leohart. The two demon swords clash in fierce battle. Though Basara manages to keep up with Leohart, Leohart clearly holds an overwhelming advantage. Basara is unable to use his Banishing Shift due to the large opening it creates. What secret strategy does Basara pull out in the fight...?

    Director:Takashi Ikehata
    Writer:Sumio Uetake

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  6. The Testament of Sister New Devil Season 2 Episode 10 - The Consequences of What Must Be Done
    8.0/10(2 votes)

    #6 - The Consequences of What Must Be Done

    S2:E10

    The council's rampage sends quakes through the demon realm, and the demon Chaos is called forth through a giant magic circle. That commander of all heroic spirits flails madly, seeking to claim Basara, Mio, and Leohart's lives. Do they even stand a chance of victory with this supreme being before them?! Meanwhile, Maria, Yuki, and the others put a final end to their own personal battle. "Believe in me... once more." The ultimate sibling combo risks their lives to face the disaster striking all of the demon realm!

    Director:Hisaya Takabayashi
    Writer:Sumio Uetake

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    The 20 WORST Episodes of The Testament of Sister New Devil

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  7. The Testament of Sister New Devil Season 1 Episode 8 - Erotic Succubus Out of Control
    7.7/10(3 votes)

    #7 - 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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  8. The Testament of Sister New Devil Season 2 Episode 1 - What I Can Do For You
    7.7/10(3 votes)

    #8 - What I Can Do For You

    S2:E1

    After ending the battle against Zolgia, Basara regains his peaceful life with his two little sisters, Mio, the daughter of the previous demon lord, and Maria, her little sister who's also a succubus. As Basara pursues the preparations for the sports festival at school, one day he's attacked by a person being manipulated by magic. Recalling the strange gaze he felt at school, a suspicion of his begins to grow...

    Director:Tatsuma Minamikawa
    Writer:Sumio Uetake

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  9. The Testament of Sister New Devil Season 2 Episode 6 - Between Reality and One's Own Truth
    7.7/10(3 votes)

    #9 - Between Reality and One's Own Truth

    S2:E6

    Basara and the others recieve a message from Lars, calling them to Leohart's royal castle. Then Basara's father, Toujou Jin, appears before them all. He brought with him another message from Leohart. A message saying that they　would hold a tournament before Leohart and Ramsus' forces to determine authority of the demon realm--authority of the demon realm being synonymous with Mio's power. After being selected as the representatives, Basara begins　learning "how to win" from Jin.

    Director:Kiyomitsu Sato
    Writer:Sumio Uetake

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  10. The Testament of Sister New Devil Season 1 Episode 1 - The Day I Got A Little Sister
    7.6/10(7 votes)

    #10 - 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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  11. The Testament of Sister New Devil Season 1 Episode 2 - First Contract Between Servant And Master
    7.6/10(5 votes)

    #11 - 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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  12. The Testament of Sister New Devil Season 1 Episode 10 - Plaintive Betrayal
    7.5/10(2 votes)

    #12 - 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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  13. The Testament of Sister New Devil Season 1 Episode 12 - For This Night, This Moment
    7.0/10(2 votes)

    #13 - 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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  14. The Testament of Sister New Devil Season 1 Episode 3 - Reunion and a Gap in Trust
    5.9/10(7 votes)

    #14 - 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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  15. The Testament of Sister New Devil Season 1 Episode 4 - Until Sadness Reaches Zero
    5.3/10(6 votes)

    #15 - 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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  16. The Testament of Sister New Devil Season 1 Episode 6 - Bearing Growing Emotions
    5.0/10(5 votes)

    #16 - 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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  17. The Testament of Sister New Devil Season 2 Episode 3 - My Cherished Feelings, For You
    5.0/10(5 votes)

    #17 - My Cherished Feelings, For You

    S2:E3

    After taking Kurumi hostage, Ornis robs Basara of the right arm wielding Bynhildr. Though he lost conciousness from the pain, his sealed power unleashes and goes on a rampage. Their positions are reversed as he corners Ornis with his overwhelming power. However, the moment he tries to silence Ornis for good, a golden chain appears and binds him. When Ornis turns around, he finds Hasegawa Chisato. What secrets has she kept hidden?

    Director:Takashi Ando
    Writer:Sumio Uetake

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  18. The Testament of Sister New Devil Season 2 Episode 4 - Amidst Entwining Plots
    5.0/10(5 votes)

    #18 - Amidst Entwining Plots

    S2:E4

    As the clash between the peaceful faction and the present demon lord faction draws near, Basara visits the peaceful faction along with Mio. Though Basara enjoys their reunion with Zest and Shella, Maria seems to be acting odd. In fact, a heavy punishment was awaiting her for her betrayal of the peaceful faction. Basara begs Rukia for her forgiveness, and ends up administering the punishment in her stead... but that punishment was to spank Maria's behind while she was in a state of arousal?!

    Director:Hiroshi Tamada
    Writer:Yasunori Yamada

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  19. The Testament of Sister New Devil Season 2 Episode 5 - Amidst the Wind Blowing Through the Battlefield
    5.0/10(5 votes)

    #19 - Amidst the Wind Blowing Through the Battlefield

    S2:E5

    Ramsus is out to extract the "Demon Lord's Power" that Mio possesses, and Basara reveals his anger at Ramsus' lack of concern for Mio's safety. Just as sparks are about to fly, Shella interrupts them. She leads Basara into the bath to try and help calm him down, and when Zest appears, she orders Zest to massage and wash Basara's body with her bountiful bosom. Then Shella tries to get Basara and Zest to forge a master-servant pact...

    Director:Yoshihiko Iwata
    Writer:Yasunori Yamada

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  20. The Testament of Sister New Devil Season 1 Episode 5 - A Little Sister's Morning Demon Lording
    4.8/10(5 votes)

    #20 - 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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  21. The Testament of Sister New Devil Season 1 Episode 7 - The Depths of Love and Hatred
    4.8/10(5 votes)

    #21 - 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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  22. The Testament of Sister New Devil Season 1 Episode 11 - Epsionage... What Lies After
    4.2/10(4 votes)

    #22 - 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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Best Episodes Summary

"Merits and Demerits of Master and Servant" is the best rated episode of "The Testament of Sister New Devil". It scored 8/10 based on 3 votes. Directed by Koji Yoshikawa and written by Unknown, it aired on 3/4/2015. This episode scored 0.0 points higher than the second highest rated, "Suspicions Deepening Within Mysteries".