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The Testament of Sister New Devil

TV animeOVA2015–20182 seasons23 episodesOriginal: light novelTetsuto Uesu

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 are actually the new Demon Lord and a succubus!? Almost trapped into a life of servitude, Basara forms a reverse contract by accident and ends up becoming Mio's master! Hijinks ensue as Basara finds himself in one ecchi situation after another. However, Mio's life is in danger as she is pursued by demons and heroes!

After The Testament of Sister New Devil: Departures, continue with Vol. 9

Reading work
Book languageJapanese
EditionKadokawa
The Testament of Sister New Devil Season 1 anime poster

Season 1

Medium confidence

12 episodesJan 2015 – Mar 2015

Anime ends at
Ep 12Original: Vol. 3

The anime’s continuation point is Vol. 4 of the original. This is the book that contains it.

新妹魔王の契約者IV

KadokawaJapanesePaperback

Where it stops:

1 side entryOVAreading notes
  1. The Hard, Sweet Daily Life of Toujou BasaraOVA1 episodeJun 2015For this bonus episode bundled with light novel volume 8, the next light novel to read is still unconfirmed.
The Testament of Sister New Devil Season 2 anime poster

Season 2

Medium confidence

10 episodesOct 2015 – Dec 2015

Anime ends at
Ep 10Original: Vol. 7

The anime’s continuation point is Vol. 8 of the original. This is the book that contains it.

新妹魔王の契約者VIII

KadokawaJapanesePaperback

Where it stops:

1 side entryOVAreading notes
  1. The Very Peaceful Daily Life of Toujou BasaraOVA1 episodeJan 2016For this bonus episode bundled with manga volume 7, the next light novel to read is still unconfirmed.
The Testament of Sister New Devil The Testament of Sister New Devil: Departures anime poster

The Testament of Sister New Devil: Departures

Medium confidence

1 episodeMar 2018

Anime ends at
Ep 1

The anime’s continuation point is Vol. 9 of the original. This is the book that contains it.

新妹魔王の契約者IX

KadokawaJapanesePaperback

All 5 books from Vol. 9 to Vol. 13
  1. Vol. 9新妹魔王の契約者IXBuy on Amazon
  2. Vol. 10新妹魔王の契約者XBuy on Amazon
  3. Vol. 11新妹魔王の契約者XIBuy on Amazon
  4. Vol. 12新妹魔王の契約者XIIBuy on Amazon
  5. Vol. 13新妹魔王の契約者XIIIBuy on Amazon

Where it stops:

Original · Light novel

The Testament of Sister New Devil

新妹魔王の契約者

Tetsuto UesuKadokawaCompleted13 volumes

  • JapaneseKadokawa13 volumesSep 2012 – Mar 2021

All volumes

Before you read

Suggested reading (Japanese · Kadokawa): Season 1 ends at Ep 12. Continue with Vol. 4.

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