The fanfic could start with Jiraiya's daughter being curious about Naruto. She has heard so many stories about him from her father's tales. Tsunade, seeing the potential in the girl, asks Naruto to train her. As they train, Naruto discovers that the daughter has a different way of thinking about ninjutsu compared to what he's used to. This difference in perspective helps Naruto to grow as well. Eventually, they form a strong bond that not only changes their lives but also has a positive impact on the village.
In this fanfic, perhaps Tsunade, being a strong female character, takes Naruto and Jiraiya's daughter under her wing. Naruto might have feelings for the daughter that he struggles with, as he also respects Jiraiya a great deal. The story could involve them facing threats to the village together. Tsunade could use her medical and combat skills, Naruto his powerful jutsus, and the daughter her unique abilities she inherited from Jiraiya to protect their home.
At first, Naruto might be a bit awkward around Jiraiya's daughter, given his respect for Jiraiya. But Tsunade, with her no - nonsense attitude, would push them to interact more. As they go on missions together, Naruto would see the daughter's determination and courage. This would make him open up more to her. He would start sharing his own stories and dreams with her. In turn, she would look up to Naruto even more, and their relationship would gradually evolve into a strong friendship or even something more in the long run.
One possible plot twist could be that Naruto develops a different fighting style. Since Tsunade is strong in physical combat and medical ninjutsu, and Jiraiya is a master of various ninjutsu and toad summons, Naruto might combine their teachings in unique ways. For example, he could use medical ninjutsu to enhance his own physical abilities during combat, similar to how Tsunade uses her strength. Another plot twist could be in his relationships. With Tsunade and Jiraiya as his guardians, he might have a different attitude towards the Hidden Leaf Village's elders. He could be more critical or more understanding depending on how they've influenced him. Also, his training might be more focused on stealth and intelligence gathering, skills that Jiraiya was good at, rather than just brute strength.
One great fanfic could be about their adventures before Naruto was born. It might explore their relationship dynamics, how they trained together and supported each other. Maybe in this fanfic, Jiraiya tries to convince Tsunade to take on more dangerous missions with him, showing his trust in her abilities.
It could be a story about their adventures together. Maybe they go on a mission to a mysterious land where they meet this 'Lemon' character who has some special power or knowledge that they need. Along the way, Jiraiya might crack his usual jokes, Tsunade could show her tough - yet - caring side, and they all grow as characters while facing various challenges.
The plot could be about Jiraiya finally confessing his love to Tsunade after years of being friends. For example, he could take her on a journey to a special place and there tell her how he really feels.
In this fanfiction, their relationship would be transformed. They would be like a married couple in a way, but without the formalities. Jiraiya would probably tone down his womanizing ways as he has a family to think about now. Tsunade would be more open and less prickly around Jiraiya. They would bicker less and cooperate more. Their relationship would be centered around Naruto, and as he grows, they would grow together as a family unit, with their bond getting stronger over time.
One possible plot could be that Tsunade and Jiraiya are deceived by false information about Naruto. Maybe they are made to believe that Naruto has turned to a dark side. For example, an enemy might have created false evidence of Naruto collaborating with a powerful evil force. Tsunade, being the Hokage, and Jiraiya, Naruto's mentor, would then be forced to take actions against Naruto that seem like betrayal from Naruto's perspective.
A possible plot could be that Naruto, under the care of Tsunade and Jiraiya, discovers new aspects of his heritage. Tsunade might know some secrets about the Uzumaki clan that she shares with Naruto. Jiraiya, being his godfather - like figure, helps him explore these new revelations. Meanwhile, the Akatsuki could still be a threat, and Naruto, with his new skills and knowledge, has to fight against them to protect the village and his loved ones.
One possible plot could be that Jiraiya and Tsunade decide to adopt Naruto after seeing his loneliness and potential. They start training him not just in ninja skills but also in life values. Jiraiya might teach him more about the toad sage techniques, while Tsunade could help him with his chakra control and medical ninjutsu knowledge. Naruto would grow up in a more stable family - like environment, which would change his personality a bit, making him more confident and less brash as he has the support and love of two powerful ninjas.
One possible plot could be that Jiraiya writes a new book, inspired by his feelings for Tsunade. Tsunade discovers this and realizes her own feelings for him in the process. As they work through their emotions, they also have to deal with the political and social implications within the ninja village, as their relationship could have an impact on the balance of power and the opinions of their comrades.