One possible reason could be that he wants to pursue a different career path outside of NCIS. Maybe he gets an offer that he can't resist, like working in a private detective agency where he has more freedom.
There is a fanfiction called 'Tony's New Chapter' which explores what could have happened if Tony had taken a different path in his career within NCIS. It has interesting plot twists and keeps you engaged throughout. The author does a wonderful job of staying true to Tony's character while also adding new elements.
Tony Dinozzo is a character full of charm and charisma. In fanfiction, we can see him in more personal and emotional situations. Writers can take his humorous side and expand on it, or they can show his serious and determined side in different ways. Moreover, the NCIS team dynamic is always interesting, and fanfiction can explore how Tony interacts with the team in various fictional situations, which is really appealing to fans of the show.
There's a fanfiction titled 'Tony's Departure and Rediscovery'. In this story, Tony leaves NCIS after feeling unappreciated. He travels around the world and has various adventures, eventually finding a new purpose away from the agency. It delves deep into his character and his insecurities that led to his decision to leave.
One great 'Tony Dinozzo leaves NCIS' fanfiction could be the one where he leaves to start his own private investigation firm. It shows his growth and independence outside the NCIS framework. He uses his skills in a different way and has to deal with new challenges.
Often, the story might follow Tony as he adjusts to his new life. He could face initial difficulties in adapting to a different work environment or routine if he gets a new job.
Sometimes it's to create drama. His leaving shakes up the whole dynamic of the NCIS team, which makes for an interesting plot. There are relationships within the team that are affected, and new storylines can emerge from that.
Often, his character is shown as more independent. For example, he might be more willing to take risks without the constraints of NCIS protocol. This allows him to grow in ways he couldn't while at the agency.
Maybe the higher - ups misjudged him. They could have been influenced by false information or just had a pre - conceived bias against Tony. For example, if there was a case where evidence was planted to make it seem like Tony made a mistake, and the superiors didn't bother to dig deeper.
One possible reason could be that the writers lost interest in the Harry Potter fandom. Maybe they found other fandoms or stories more appealing.
Well, the plot could involve Tony being a single dad trying to balance his work and raising his daughter. Maybe his NCIS colleagues would help him out, like Gibbs giving him fatherly advice. His daughter could be a smart and curious girl who gets into little adventures around the NCIS office, causing both chaos and heart - warming moments.