In the original storylines, Tony and Peter often have a mentor - mentee relationship. So, in this fanfiction, the act of Tony killing Peter is a huge deviation. It goes against the bond they usually share.
One possible motive could be that the souk stone has some sort of power that Tony is desperate to obtain. Maybe it can grant him ultimate power or fulfill a long - held desire, and Peter is just an obstacle in his way.
Yes, there might be such a fanfiction out there. Fanfiction often explores dark and alternative storylines. However, it can be quite a controversial and dark concept as Tony and Peter have a mentor - mentee relationship in the mainstream Marvel stories.
It probably deviates by introducing the concept of imprinting which may not be part of the original character arcs. In the original, their relationships and storylines might be more straightforward, but in this fanfiction, the imprinting adds a new layer of complexity and a different type of bond.
In the original storyline, Yagura was the Fourth Mizukage who was being controlled by Obito. He was more of a victim. But in this fanfiction, Naruto kills him, which is a huge deviation as Naruto is usually about saving people. In the original, Naruto tries to understand and redeem his enemies, not kill them outright.
The original series is all about Harry's fight against evil and his will to survive. But in this fanfiction, it goes against that completely. Harry is a symbol of hope in the original, and him killing himself is a huge departure from his character's core values.
Well, in the original Naruto storyline, Minato is Naruto's father and he sacrificed himself to save the village and Naruto. So, in the fanfiction where Minato kills Naruto, it completely goes against this fundamental relationship. It changes the very essence of Minato's character from a self - sacrificing hero to a killer.
The original series focuses on the love story between Bella and Edward and the family dynamics within the Cullens. The 'Rosalie Kills Bella' fanfiction completely changes the narrative by introducing a very different kind of conflict. It takes away the central love story aspect and replaces it with a more sinister plotline. Rosalie's character in the original is complex but not murderous towards Bella, while the fanfiction rewrites her in a more extreme way.
The original Harry Potter series is based on themes of love, friendship, and the co - existence of wizards and Muggles. In the 'Harry Potter kills Muggles' fanfiction, it completely goes against this by having Harry, who is a symbol of good in the original, become a murderer of Muggles. This is a huge deviation from the core values of the series.
In the original storylines, there is no such plot as teenage pregnancy for Harry and Hermione. Fanfiction takes this wild turn to create a completely different narrative. It might change the whole dynamic of their relationship which was mainly platonic in the original.
The original Harry Potter series is about friendship, love, and the fight against evil. Harry is portrayed as a hero who would never harm his loved ones. However, in this fanfiction, the very foundation of Harry's character is shaken. It also changes the overall tone of the story. Instead of a story of hope and heroism, it becomes a dark and tragic tale that subverts the expectations set by the original series.