Perhaps in the fanfic, Snape discovers a powerful and dangerous magic that he wants to use for what he believes is the greater good, but Harry sees it as a threat. Harry has always been wary of Snape, and this new discovery could be the tipping point. Also, if Snape were to make a deal with a dark force in order to gain knowledge to defeat Voldemort but Harry misinterprets his intentions, it could lead to Harry killing Snape.
One possible motive could be that Snape is still deeply influenced by his loyalty to Voldemort in this fanfiction. Maybe Voldemort has some hold over him that forces him to do the unthinkable. Another reason could be a misunderstanding. Snape might believe that Harry has turned to the dark side or is about to, and he decides to take preemptive action to stop what he thinks will be a great evil.
Well, it completely flips the dynamic. In the original series, Snape was a complex character with a lot of hidden motives that were ultimately revealed to be on the side of good. If Harry kills Snape in the fanfic, it makes Harry seem more impulsive and less of the heroic figure we know. It also undermines the redemption arc that Snape had in the original story.
Yes, it is a somewhat common theme in some fanfictions. One reason could be the complex relationship between Harry and Snape in the original series. Snape was often cruel to Harry, so in some alternate universes, writers explore the extreme scenario of Harry killing Snape. It also allows for exploring darker aspects of Harry's character and the consequences of such an act within the wizarding world.
One plot could be that Snape is discovered to be working on a new dark magic spell that would endanger the whole wizarding world, and Harry, in an attempt to stop him, ends up killing him. Another could be a case of misinformation. For example, Harry is tricked into believing that Snape killed someone he loves dearly, like Ginny, and in his rage, he kills Snape before finding out the truth.
One possible motive could be a misunderstanding. Maybe Snape is framed for something really bad, like a dark magic plot against Hogwarts. Harry, in his haste to protect the school and his friends, believes Snape is guilty and takes drastic action. Another reason could be if Snape accidentally endangers someone Harry loves dearly, like Ginny or Ron, and Harry's emotions get the better of him in the heat of the moment.
I'm not sure if there is such a specific 'Harry Potter Kills with a Knife' fanfic. There are countless fanfics out there, and some might have very unusual or dark concepts like this, but it's not a common or well - known one in the mainstream Harry Potter fanfic world.
Yes, there are likely fanfics out there with that plot. Fanfic writers often explore unique and creative scenarios like Harry killing a dragon. You can try searching on fanfic platforms such as Archive of Our Own or Fanfiction.net to find such stories.
Probably not. Given that the Harry Potter series is mainly about positive values like friendship and fighting evil, a fanfic where Harry kills everyone goes against those values. It's likely to be a very dark and disturbing story that may not be suitable for all audiences, especially younger fans who are used to the more positive and heroic image of Harry.
Yes, there are some fanfics with such wild and out - of - canon concepts in the Harry Potter fanfiction community. However, these often deviate greatly from the original storyline and themes of the official series.