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.
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.
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.
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.
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.
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.
Fanfiction about Anthony Dinozzo's love in NCIS can be really exciting. There are stories where his love interest is a new character introduced specifically for the fanfic. These stories often take the essence of Dinozzo's character - his charm, his loyalty - and build a love story around it. They can show his growth as a character through his relationship, which is something fans really enjoy.
Well, in the context of NCIS fanfiction involving Tony and Ada, it could be that the writer is exploring a romantic angle between them. However, this might be a deviation from the normal character dynamics in the show. Fanfiction often takes creative liberties to create new and exciting storylines. For example, they might be paired up on a dangerous undercover mission that leads to a deeper connection.
One common theme is the 'forbidden love' aspect. Maybe he falls for a superior or someone in a position that makes the relationship complicated. Another theme could be 'love against all odds', like when he's in a relationship during a particularly dangerous case.
There's also a fanfic called 'Dinozzo's Undercover Adventure'. This one delves deep into Tony's undercover abilities. He has to navigate a dangerous underworld while still maintaining his charm. It's full of action, suspense, and of course, Tony's trademark humor. The author does a great job of showing how Tony can be a real bamf in high - stress situations.