Maybe Naruto, being smart and having the Rinnegan, decides to use its power to heal the rifts between different ninja clans. He devises a plan to bring everyone together using the unique abilities of the Rinnegan, like the ability to control the tailed beasts in a more peaceful way. He uses his intelligence to persuade each clan that unity is the best option for their survival and prosperity.
A possible storyline is that Naruto discovers a new and dangerous enemy that is immune to normal ninja attacks. But with his intelligence and the Rinnegan, he studies the enemy's weaknesses. He might use the Rinnegan's ability to see chakra flow to find a chakra - based vulnerability in the enemy. Then, he uses his smarts to come up with a complex strategy involving the use of shadow clones and the Rinnegan - enhanced jutsu to defeat this new foe.
One possible storyline could be Naruto obtaining Stormbreaker in a strange cross - over event. Maybe he's on a mission in a different realm and discovers the weapon. He then has to learn how to use it in combination with his chakra powers. For example, he might infuse his chakra into Stormbreaker to create new and powerful attacks.
One possible storyline could be that Naruto is banished due to the village's fear of the power of the Rinnegan. He then has to journey alone, facing various enemies who are both after his power and out to get revenge on Konoha. Along the way, he might meet some unexpected allies who see his true nature and help him control and understand the Rinnegan's abilities.
A plot development might involve Naruto struggling to control the Rinnegan at first. Sasuke, noticing this, believes he can defeat Naruto easily with his Sharingan. But as Naruto starts to master the Rinnegan, he shows new abilities that shock Sasuke. This could lead to a situation where they have to team up against a common enemy who is after the power of both the Rinnegan and the Sharingan. Or perhaps a prophecy is revealed that states only one of them can keep their dojutsu power and they must fight to decide who keeps it, leading to a moral and power - based struggle.
In fanfiction, the idea of Naruto having the Sharingan and Rinnegan is often a creative and out - of - the - box concept. It could be due to some kind of powerful jutsu or a unique plot device. Maybe a powerful enemy uses a forbidden jutsu that somehow transfers the powers to Naruto. Another possibility is that in an alternate universe created by the fanfic writer, the rules of chakra and kekkei genkai are different, allowing Naruto to possess these powers.
Perhaps Naruto gets the blue Sharingan as part of a forbidden ritual that was meant to save the Hidden Leaf Village from a powerful dark force. This would lead to him being shunned by some villagers who fear his new, unknown power. He would then have to prove himself and his intentions with the Sharingan. Also, it could be that the blue Sharingan is a key to unlocking a hidden dimension that holds the secrets to ultimate ninja power, and Naruto embarks on a journey to explore this dimension.
Well, one possible storyline could be that Naruto has to learn to control the power of the two bijuu simultaneously. He might face challenges in balancing their different natures and abilities.
In this fanfiction, it could be that Ino's fangirling over Naruto is part of a bigger plot. Maybe there's a villain who notices Ino's infatuation and tries to use it against Naruto. The villain could manipulate Ino into spying on Naruto or leading him into a trap. Naruto then has to figure out how to deal with this situation, while also trying to protect Ino from the villain's clutches. This would add an element of mystery and danger to their relationship.
Well, one possibility is that Naruto could use Shoton techniques to create various crystal constructs for both offense and defense. For example, he could form crystal shurikens that are much sharper and more durable than normal ones. Maybe he could also create crystal prisons to trap his enemies. In the story, this new bloodline might make him an even more formidable ninja, attracting the attention of stronger enemies who are interested in his unique power.
One interesting storyline could be the main character with the Godlike Rinnegan exploring different relationships within the harem. Maybe he uses his powers to protect the members of the harem from various threats in the Naruto universe.
One popular fanfic could be where Naruto gets the Rinnegan through some kind of ancient power transfer. In this fic, he might use the Rinnegan's powers in unique ways, like combining its abilities with his own Sage Mode and Nine - Tails chakra. This could lead to him being able to perform new jutsu that are a blend of different powers.