Testament of the sister new devil

The subreddit for the anime/manga/light novel Shinmai Maou no Testament, aka The Testament of Sister New Devil, aka Shinmai Maou no Keiyakusha.

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10 Year Anniversary

Posted 29th Sep 2022u/ChisatoBestCake

Mio wearing different anime uniform

Posted 10th Apr 2026u/Mysterious-Mixture-8

My Maria Naruse cosplay

Posted 10th Apr 2026u/TeaseForMore

our first time with Chisato-sensei

Posted 6th Apr 2026u/Mysterious-Mixture-8

Mio Naruse: - Fan Art made by: ( 智弘)

Posted 4th Apr 2026u/Chisato-Hasegawa-MX

What Basara did over the Spring break:

Posted 1st Apr 2026u/GodWarrior88

Yuuki Nonaka: - Fan Art made by: ( @ Daat )

Posted 28th Mar 2026u/Chisato-Hasegawa-MX

Basara Toujou: - Fan Art made by: ( @ 零 )

Posted 25th Mar 2026u/Chisato-Hasegawa-MX

Pick your favorite: Mio vs Chisato

Posted 24th Mar 2026u/Mysterious-Mixture-8

Mío Narouse and Yuki Nonaka: - Fan Art made by: ( @ ワイオミングの夢 )

Posted 24th Mar 2026u/Chisato-Hasegawa-MX

Chisato Hasegawa: - Fan Art made by: ( @ アルクフィールド )

Posted 21st Mar 2026u/Chisato-Hasegawa-MX

Happy Birthday to Asakawa Yuu, the Japanese voice actress of Chisato!

Posted 20th Mar 2026u/BlackBricklyBear

A massage by Zest

Posted 16th Mar 2026u/Mysterious-Mixture-8

Chisato-sensei at hotel room

Posted 14th Mar 2026u/Mysterious-Mixture-8

pick your favorite: Zest vs Chisato

Posted 12th Mar 2026u/Mysterious-Mixture-8

What would you do if she did this to you?

Posted 10th Mar 2026u/Unlegendary_Newbie

Beautiful illustration. Mio Naruse looks beautiful 🙂 (ookuma nekosuke)

Posted 9th Mar 2026u/Lion_tiger12v

Mío Narouse with her shorts and yellow top tank by レイブン・エスメラルダ

Posted 8th Mar 2026u/Chisato-Hasegawa-MX

Was this Jin Toujou fight one of the best fights in the series? The Testament of sister new devil

Posted 7th Mar 2026u/ActSevere5034

Wich your favorite vol?

Posted 6th Mar 2026u/Mysterious-Mixture-8

redhead waifu trinity: Mio Naruse, Rias Gremory and Stella Vermillion

Posted 4th Mar 2026u/Mysterious-Mixture-8

Mio wearing a slingshot

Posted 4th Mar 2026u/Mysterious-Mixture-8

Does he have the best harem in all of anime? The Testament of Sister New Devil

Posted 2nd Mar 2026u/ActSevere5034

Mio Naruse as a Idol live

Posted 2nd Mar 2026u/Mysterious-Mixture-8

Yuki Nonaka - Fan Art made by (@kxlローズ)

Posted 28th Feb 2026u/Chisato-Hasegawa-MX

Big fatty boobs will definitely apprehend you now😅😂 Testament of sister new devil

Posted 25th Feb 2026u/ActSevere5034

It’s always Maria 🤣😅Testament of sister new devil

Posted 23rd Feb 2026u/ActSevere5034

Mio Naruse by Daat

Posted 21st Feb 2026u/Chisato-Hasegawa-MX

Happy birthday to Yuichi Nakamura who voiced Basara

Posted 20th Feb 2026u/RemarkableOption8620

Imagine the chaos Shizuka Marikawa and Meiko Shiraki would cause if they met Chisato Hasegawa

Posted 18th Feb 2026u/Chisato-Hasegawa-MX

Mio's a back girl moment #1

Posted 18th Feb 2026u/GodWarrior88

Silly question I have been thinking about: does Mio develop a back fetish when she felt and saw Basara's back?

Posted 18th Feb 2026u/GodWarrior88

Maid Mio Narouse by Daat

Posted 14th Feb 2026u/Chisato-Hasegawa-MX

Chisato is the best waifu at the series?

Posted 12th Feb 2026u/Mysterious-Mixture-8

Mio Narouse by 绯红残翼

Posted 7th Feb 2026u/Chisato-Hasegawa-MX

Happy Birthday To Sarah Emi Bridcutt! 🥳🎉

Posted 4th Feb 2026u/Technical_Freedom566

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