History Main / MurderMakesYouCrazy

* Light Yagami of ''Manga/DeathNote''. He's an [[OrdinaryHighSchoolStudent ordinary school student]] until he writes the first name in the titular ArtifactOfDoom. After that, he develops [[AGodAmI delusions of grandeur]] and wants to cleanse the world of evil (leaving himself as the only evil person, as Ryuuk points out; Light is already too into his delusions of being a god of justice to understand that). In the manga, the reader first sees how Light has already killed numerous targets before flashing back to his first kill for maximum shock value and to show how far he has already fallen in such a short time.

* ''Anime/PuellaMagiMadokaMagica'': In the manga ([[DependingOnTheWriter but not the anime]]), [[spoiler:Sayaka]]'s final straw is her murder of two random guys who, all things considered, didn't really deserve being killed in cold blood. [[AndThenJohnWasAZombie By her own admission, she is such a fool]].
* [[spoiler:Reiner Braun]] from ''Manga/AttackOnTitan'' is driven insane by the guilt of having committed mass murder, developing a DoubleConsciousness in order to keep going. In particular, the murder of [[spoiler:Marco Bott]] [[HeKnowsTooMuch to protect their secret]] causes him to completely break down, immediately lapsing into a Dissociative state and pleading to know ''why'' their friend is being eaten.

'''This is a trope specifically pertaining to murder (and insanity). Expect spoilers.'''

* Light Yagami of ''Manga/DeathNote''. He's an [[OrdinaryHighSchoolStudent ordinary school student]] until he writes the first name in the titular ArtifactOfDoom. After that, he develops [[AGodAmI delusions of grandeur]] and wants to cleanse the world of evil (leaving himself as the only evil person, as Ryuuk points out; Light is already too into his delusions of being a god of justice to understand thata). In the manga, the reader first sees how Light has already killed numerous targets before flashing back to his first kill for maximum shock value and to show how far he has already fallen in such a short time.

Compare and contrast LoveMakesYouCrazy. Related to ItGetsEasier and possibly ShellShockedVeteran. Frequently is accompanied by ScrubbingOffTheTrauma and can lead to one becoming AxCrazy.

The name of this trope is from LoveMakesYouCrazy, so contrast this. Also related to ItGetsEasier, and possibly ShellShockedVeteran. Frequently is accompanied by ScrubbingOffTheTrauma and can lead to one becoming AxCrazy.

Normally, in RealLife (although there may be exceptions), a person is ''already'' crazy and/or violent before they contemplate murder. In television, however, circumstances will cause you to commit murder, and then you keep killing. No, this trope is '''not''' about [[NeverOneMurder murder where you have to keep killing in order to "hide the evidence"]]. Instead, it's about murder ''actually warping the mind'', either by [[MyGodWhatHaveIDone guilt]] or as the [[NeverMyFault process of rationalizing the murder]] sets in. (Unless, of course, [[TheSociopath it never even bothered you in the first place.]])

Usually, this involves some lead-up event where they are sane but [[GainingTheWillToKill have decided to kill]] from being put into a situation where, unless they are an ActualPacifist with a knack for [[TakeAThirdOption taking third options]], they will practically be forced to murder [[SadisticChoice because of a no-win situation]]. After doing the actual murder, however, the act makes them evil, or in this trope, insane.

The name of this trope is from LoveMakesYouCrazy, so contrast this. Also related to ItGetsEasier, and possibly ShellShockedVeteran.