

Since a shinigami dies when he saves a human with his death note, he dies. But
when a human does it, he/she won't die. This makes me wondering what happens
when a human saves another human with a death note. So here's my bad example:

Mr. X is a serial killer.

He sees a young Lady and decides to kill her. He stalks her, to know her
better.

One week later, the boyfriend from the lady gets a death note from a
shinigami.

On the next day, Mr. X tries to kill the lady but her boyfriend writes Mr. Xs
name in his death note. Will the young Lady now get a new lifespan. Or will
she get the lifespan from Mr. X?

(Just an example)


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death-note
What happens when a human saves another one with a death note?


I disagree with [Grimlock77X
comment](https://anime.stackexchange.com/questions/15042/what-happens-when-a-
human-saves-another-one-with-a-death-note#comment19646_15042). It's stated in
the rules and by Ryuk that the fundamental difference between Humans and
Shinigami using the Death Note is that humans don't gain lifespans.

[In How to Use:
XLII](http://deathnote.wikia.com/wiki/Rules_of_the_Death_Note#How_to_Use:_XLII)

> The use of the Death Note in the human world sometimes affects other humans'
> lives _or_ shortens their original life span, even though their names are
> not actually written in the Death Note itself. In these cases, no matter the
> cause, the god of death sees only the original lifespan and not the
> shortened lifespan.

^ emphasis added by me

since the rule says it that the use of the Death Note can affect lives _or_
shorten the original life span we can assume that the Death Note can
indirectly give a human more life.

think about rape victims who are denied justice (like [Yonegoro
Nusumi's](http://deathnote.wikia.com/wiki/Yonegoro_Nusumi) victim), if cop
drama's like Law and Oder: SVU is anything to go by, without counseling their
life deteriorates. with Light killed Yonegoro Nusumi or anyone like him the
victims feel justice have been served and improve their lives (and there are
no future victims for serial offenders) or wont commit suicide from the denied
justice.

As for the lifespans, according to [this
answer](https://anime.stackexchange.com/a/15079/1587) Mr X's lifespan would be
just wasted so this isn't distributed. there is also no way guarantee the lady
would've lived longer or even shorter because of his death, I dare say also
that even with Shinigami Eyes you won't see if the lady lives longer since
Shinigami will only ever see the original lifespan so likewise a human with
the eye deal will see the same, the only way is if you were like Beyond
Birthday or L and had worked out how to read Lifespans and knew when the lady
would die


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How to use LIX:

> A human death caused by Death Note will indirectly lengthen some other
> human's original life even without a specific intention to lengthen a
> particular person's original life span in the human world.

The lady's life will be lengthened to a new time


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