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I can't completely remember the story, but this is the main protagonist:

![Main protagonist](https://i.stack.imgur.com/QEDB6.jpg)

She is a high school (?) student whose best friend tries to kill her after
she's drugged/hypnotized into killing anyone who is a murderer, but —
surprise! — she's in fact a murderer who hasn't yet "awakened" to her
murderous tendencies.

Another serial killer that wields giant scissors that come apart (it's one
scissor by the way) comes along and finds her and tells her that she's now his
"little sister" and she's "part of the family", to which she accepts.
Apparently, he got lonely being a ruthless serial killer and starts gathering
serial killers to form a family. He defends her against people who are hunting
serial killers down, and kills the girl's family and drugs the city and that's
as far as I've got.


CC BY-SA 3.0
2015-07-19T17:55:41.283
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question
zerozaki-soushiki
Help with finding this manga about a family of killers who wield scissors?


You're probably looking for [Zerozaki Soushiki no Ningen
Shiken](https://www.mangaupdates.com/series.html?id=69632). This is a manga
adaptation to NisiOisin's Ningen series, which is a spin-off from the
[Zaregoto series](https://en.wikipedia.org/wiki/Zaregoto_Series)

> Iori is a high school girl who doesn't know what she wants to do with her
> future, and tends to run away from things. One day, she is attacked by
> strange dead-eyed people on her way to school, only to be saved by an
> equally mysterious long-haired man. Later that day, her friend at school,
> Jion, seems to fall under the same murderous influence. To her surprise, she
> finds herself capable of defending herself from his violent attack.
> Afterward, the long-haired man she met in the morning, Zerozaki Soushiki,
> arrives once more, this time to invite her to become his little sister. What
> has Iori become involved with, and will she be able to survive this change
> to her life?

![Manga volume 1](https://i.stack.imgur.com/XKfZdl.jpg)


CC BY-SA 3.0
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answer