A possible plot could be that the rat summons are in danger. Some dark force in the ninja world is hunting them down for their unique chakra or some other special ability they possess. Naruto has to protect his rat summons and in the process, he uncovers a conspiracy that is much larger than he expected, involving multiple villages.
Maybe the rat summons start to show signs of strange behavior. Naruto tries to figure out what's wrong with them. He discovers that there is an ancient curse placed on the rat summons long ago. To break the curse, he has to journey to a far - off and dangerous place, facing many challenges along the way. This journey could also be a way for Naruto to grow stronger and gain new insights into the ninja world.
In a Naruto rat summon fanfiction, the rats could have a special bond with Naruto that is different from his other summons. Maybe they are more in tune with his emotions. So when Naruto is feeling down or frustrated, the rats come to his side to cheer him up, not just in a physical way but also by sharing their own simple wisdom. This could add a really heartwarming aspect to the story.
The plot could be that Naruto accidentally summons the leopard instead of his normal toads during a battle. The leopard is initially hostile but Naruto manages to convince it to help him. They then form an unexpected bond and the leopard becomes Naruto's secret weapon.
Maybe the rat contract allows the user to communicate with rats in a special way. The rats could help in battles by distracting opponents or even stealing small but important items from the enemy. They could swarm over an opponent, causing confusion.
One possible plot could be that Naruto discovers an ancient scroll that reveals the secrets of the monkey summon. He then embarks on a quest to find the monkey summon. Along the way, he has to face various challenges and enemies. Once he finally summons the monkey, it could be a powerful ally that helps him in battles against stronger foes like the Akatsuki members.
Well, one possible plot could be that Naruto, in his focus on other things like becoming Hokage and protecting the village, completely overlooks a powerful god - like summon. Maybe this summon has unique abilities that could have been a great asset to him. For example, it could have the power to control the elements in a way no other summon can. As a result of being neglected, the summon might grow resentful and start causing problems in the ninja world. This could then lead to Naruto having to face the consequences of his neglect and find a way to make amends with the summon.
The plot could be that the snake summon discovers a hidden lemon grove in the ninja world. This grove has some kind of special chakra - infused lemons. Naruto and the snake have to protect these lemons from an evil ninja clan who wants to use their power for bad. It could lead to an epic battle where the snake uses its unique abilities along with the lemons' power.
One plot idea for a snake summon Naruto fanfic is that there is a prophecy about a chosen one who can fully control the snake summons. A young girl from a far - off land believes she is this chosen one. She travels to the Hidden Leaf Village to find Naruto, thinking he can help her fulfill her destiny. Together, they unlock the true potential of snake summons and use it to save the ninja world from a dark force that is slowly consuming all the chakra in the land.
If Naruto could summon Manda in fanfic, it would likely change the balance of power in battles. It might also affect his relationships with other characters, as they'd view him differently with such a powerful summon at his disposal.
He could summon different kinds of tigers. Maybe there are snow tigers for cold environments. These tigers would be white - furred and well - adapted to snowy areas. They could be used in missions in the Land of Snow.
One possibility is that the reverse summoning is part of a secret jutsu gone wrong. Gojira's arrival might disrupt the balance of chakra in the Naruto world. The plot could involve Naruto seeking out ancient scrolls or wise sages to understand how to deal with this unexpected situation. He might also have to team up with his friends, like Sasuke, to control Gojira's power and prevent it from destroying everything.