One interesting plot could be that Naruto and Kiba travel back in time to the founding of Konoha. They could meet the first Hokage and his comrades. Naruto might use his knowledge of the future to prevent some of the early tragedies that befell Konoha, like certain battles or internal conflicts. Kiba, with his skills and the Inuzuka clan techniques, could also play a crucial role in helping the early shinobi of Konoha. They could also learn new jutsu from that era and bring it back to their own time, making them even more powerful shinobi.
Maybe they travel back to a time when the Nine - Tails attacked Konoha for the first time. Naruto, having the Nine - Tails inside him, could have a strange connection to the event. Kiba could help Naruto in figuring out a way to stop the attack without causing too much destruction. They might also interact with Naruto's parents during this time travel. This would give Naruto a chance to meet his parents in a different way than just through the memories of the Nine - Tails, and it could change the course of history for Konoha.
A possible plot is that they time - travel to a period when the Akatsuki was first formed. Naruto and Kiba could try to understand the motives of the original Akatsuki members. They might be able to prevent some of the members from turning bad or at least disrupt their early plans. Kiba could use his tracking skills to keep an eye on the Akatsuki's movements, and Naruto could use his talk - no - jutsu to try and persuade them to a different path. This would have a huge impact on the future of the ninja world as the Akatsuki's actions were a major factor in the series.
A cool concept would be Kiba traveling to a parallel universe where time runs differently. In this universe, he might find that his friends have different personalities or abilities. He could also time travel to a time when there was a great plague in the ninja world. Kiba could then use his medical knowledge (if he has any) or his tracking skills to find the source of the plague and try to stop it.
It could be Orochimaru. If Naruto and Kiba travel back in time, Orochimaru might be in the middle of his evil experiments. He was always a major threat in the Naruto series, and in the past, he could be even more dangerous as he was less known and had more freedom to act. He might target Naruto and Kiba to use them in his experiments or to stop them from interfering with his plans.
Well, one plot point could be how their friends react. Maybe Naruto and Kiba keep their relationship a secret at first and their friends start to notice strange behavior between them. Another could be that they accidentally kiss during a mission and then have to deal with the awkwardness and the realization of their feelings.
One idea could be a mission where Kiba, Naruto and their team have to protect a rare and powerful animal. During the mission, they face off against a group of rogue ninjas who also want to capture the animal for their own evil purposes. Kiba's connection with his dog Akamaru could play a crucial role in tracking and fighting the rogues.
Perhaps in the fanfiction, there's a mysterious illness spreading in the village that only affects ninja with strong bonds to their animals. Kiba is worried about Akamaru, and Naruto offers to help find a cure. They travel to different lands, meet various healers, and during this journey, they learn more about each other's pasts and dreams, forging a deeper connection.
One idea could be a story where fem Naruto and Kiba team up for a special mission in a new and dangerous land. They have to rely on each other's unique skills, like Naruto's shadow clones and Kiba's tracking abilities with Akamaru. Another plot could involve a friendly competition between them to see who can master a new jutsu faster. Maybe there's also a plot where they get transported to a different dimension and have to find their way back home together while facing strange new enemies.
One plot idea could be that Naruto and Kiba are part of a secret werewolf clan in the Hidden Leaf Village. They have to hide their werewolf identities while also dealing with the normal ninja duties. For example, during a full moon, they have to find a way to excuse themselves from missions or training to avoid transforming in front of others.
One idea could be a mission where they have to infiltrate an enemy base. Shikamaru could come up with a complex plan, Kiba with Akamaru could use their tracking skills to find the best entrance, and Naruto could provide the brute force when needed.
Perhaps it could be about a competition between Naruto and Kiba during a particularly intense training session. They both get really 'in the zone' or 'in heat' in terms of their competitive spirit. Naruto might be using his new jutsu while Kiba is pushing Akamaru to their limits. This could lead to some friendly rivalry and growth for both of them.
Kiba knots in Naruto fanfiction might also be related to cultural or symbolic elements. Since Naruto is inspired by Japanese culture, there could be some fanfictions that use the concept of 'knots' in a more traditional sense. Kiba could be involved in a story where he has to untangle a mystery or a situation that is symbolized by a knot. This could be related to his clan's traditions or some hidden power that is locked behind a 'knotted' mystery.