Well, in this fanfiction scenario, if Naruto discovers Tsunade is his mother, it could change his entire world view. He has always seen Tsunade as a strong and somewhat intimidating figure in the village. Now, as his mother, she could become a more nurturing presence. Naruto might also start to question his own identity more deeply. He's used to being the orphaned Naruto, but now he has a family connection to one of the most powerful people in the village. This could lead to new storylines about him learning more about his family history and what it means to be related to Tsunade.
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.
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.
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.
In such a fanfiction, the Hokage might be consumed by grief. They could vow to find out who was responsible for Naruto's death and seek revenge. It could also lead to a dark period in the Hidden Leaf Village, with the villagers losing hope as Naruto was seen as a symbol of strength and unity.
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.
In this kind of fanfiction, the story might develop in a way that the Hokage goes on a personal quest to find the truth. Along the way, they discover that Naruto's death was part of a much larger plan by an enemy. As a result, the Hokage has to gather allies and prepare for a big battle against this hidden enemy. The whole village would then be united again under the Hokage's leadership to avenge Naruto.
It's hard to say if there's a super - popular Naruto kiss Tsunade fanfic. There are so many fanfics out there, and new ones are being written all the time. While some fanfics with this idea might have a decent amount of readers, it's difficult to determine which one is the most popular. It could also depend on how well - written the story is, how it develops the relationship between Naruto and Tsunade, and how it fits into the overall Naruto lore.
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.
His relationship with Sakura would change. Sakura has always respected Tsunade as her mentor. Now, if Naruto is Tsunade's son, Sakura might see Naruto in a more complex way, perhaps with a new level of respect. With Kakashi, he might be more protective of Naruto, knowing he's related to Tsunade. And the other villagers, some who have always been a bit standoffish to Naruto, might start to treat him better as they wouldn't want to cross Tsunade.