You can start by looking on fanfiction websites like FanFiction.net or Archive of Our Own (AO3). These platforms have a vast collection of Naruto fanfics and there's a good chance you'll find some where Tsunade plays a significant role.
In a fanfic where Tsunade finds a Naruto fanfic, it could be really interesting. Tsunade might be amused or shocked by the different interpretations of Naruto's story. Maybe she'll be intrigued by how the fans see her character. For example, she could find a fanfic that portrays her in a romantic relationship she never expected, and her reaction to that could be quite humorous.
The theme of friendship is also quite common. Despite their age difference, Naruto and Tsunade can form a unique friendship. In fanfictions, they might share their past experiences, their hopes and dreams. Tsunade might open up to Naruto about her losses, like the death of her loved ones, and Naruto can comfort her with his positive outlook on life. This friendship can then be a driving force in the story, helping them face various challenges together.
One place to start looking for such fanfiction is on popular fanfiction websites like Fanfiction.net or Archive of Our Own (AO3). These platforms have a vast collection of Naruto - related fanfictions, and you can use their search functions. Just type in keywords like 'female Naruto' and 'Uzumaki' to narrow down the results.
Naruto could be developed by having him face moral dilemmas that Tsunade has already experienced. Tsunade can guide him through these, and in the process, Naruto becomes more mature and worldly. Tsunade's character can be developed by Naruto challenging her traditional ways. For example, Naruto might suggest a new approach to handling village finances or medical training, which forces Tsunade to adapt and grow. This interaction would make both characters more three - dimensional in the fanfic.
Tsunade's character often develops a stronger sense of purpose. In fanfictions where she finds baby Naruto, she realizes that she has a new mission, which is to raise Naruto to be a great ninja. This might lead to her changing her ways in terms of leadership in the village. She might start to focus more on the future generation and how to make the village a better place for Naruto and others to grow up in. She also may become more empathetic towards others in the village as she experiences the joys and challenges of raising Naruto.
I'm not sure if there is a specific fanfic with that exact premise. However, in the Naruto canon, Naruto has no such relation to Tsunade. Fanfic writers might create such a story for the sake of exploring different character dynamics and plot twists. They could potentially rewrite the backstories to make it work, like having Naruto be from a different family lineage that is related to Tsunade's in some way.
Another option is to check Naruto - related forums. Fans often share their fanfictions or recommend good ones in those forums. For example, Naruto Forums might have some martial arts - themed Naruto fanfictions shared by the members.
One possible interesting storyline could be Tsunade teaching Naruto some unique medical ninjutsu skills. This would not only expand Naruto's abilities but also create a strong bond between them as mentor and student.
There's a fanfiction called 'Tsunade and the Infant Naruto'. Here, Tsunade's discovery of baby Naruto leads to a series of events that change the course of Naruto's early life. Tsunade starts to secretly train Naruto in her own special techniques, away from the prying eyes of the village. This gives Naruto an edge later on when he starts his official ninja training. The fanfiction also delves into how Tsunade's presence affects Naruto's self - esteem and his view of the world around him.
One great fanfic could be 'Naruto's Reunion with Kushina'. In this fanfic, Naruto discovers a hidden jutsu that allows him to travel back in time and he meets his mother Kushina. It's a heartwarming story as they bond and Kushina gets to see the amazing person Naruto has become.