A plot could revolve around Orochimaru being forced to protect Naruto for some reason. Maybe there is a powerful enemy that is after Naruto and Orochimaru has to keep him safe because of some hidden agenda related to the balance of power in the ninja world. This would lead to a series of adventures where Naruto starts to see Orochimaru in a different light, not as a pure villain.
One plot idea could be Orochimaru seeing some potential in child Naruto that is different from the Nine - Tails. Maybe he wants to train Naruto in a different form of jutsu, not for evil but for some self - serving yet not completely malicious purpose. For example, he could be interested in Naruto's ability to make friends and wants to use that to his advantage in the ninja world.
How about a story where Orochimaru, in a strange turn of events, has lost his memory. Sakura, being the medical ninja she is, is tasked with helping him recover. As she tries to bring back his memories, she discovers parts of his past that she never knew and has to decide whether to keep these secrets or expose them. It would be a story full of mystery and moral dilemmas.
A plot could be that Mariah and Ray are neighbors and they start a little gardening project together. They share plants, learn about different gardening techniques, and in the process, become really good friends. Maybe they enter a local gardening competition.
One idea could be that Tsume teaches Naruto some special Inuzuka clan techniques for tracking. Naruto, always eager to learn new skills, would be a great student. This could lead to them going on a joint mission to track down a powerful enemy who has been causing trouble in the Hidden Leaf Village.
One idea could be that Haku survives and joins Naruto on his journey to become Hokage. They could travel together, with Haku using his ice jutsu to help Naruto in various battles and Naruto teaching Haku about the power of friendship and never giving up. This would be a story of their growth as comrades.
They could be on a diplomatic mission together to another village. Along the way, they face various challenges like cultural differences and distrust from the other village. Through their combined efforts, they manage to overcome these obstacles and in the process, their relationship as comrades grows. This kind of plot can show their diplomatic and problem - solving skills while also exploring their relationship.
In a non - adult 'Sasuke kidnaps Naruto' fanfiction, a possible plot development could be that Sasuke kidnaps Naruto in order to protect him from a greater threat that he doesn't think Naruto is aware of. Maybe there's a new enemy in the Naruto - verse that Sasuke believes only he can handle, and he thinks Naruto will be safer away from the action at first.
One idea could be Orochimaru taking an unexpected interest in Naruto's growth not for his power but for his unique way of seeing the ninja world. Maybe Orochimaru starts to secretly guide Naruto in some unorthodox ways of chakra control, which Naruto initially resists but later realizes could be useful.
Perhaps Orochimaru's experiment accidentally releases an ancient evil that was sealed long ago. Naruto, being the hero he is, takes it upon himself to reseal the evil. Along the way, he discovers secrets about his own family and the origin of chakra that are linked to Orochimaru's experiment.
One plot idea could be Orochimaru finding a way to truly achieve immortality that doesn't involve body - hopping. Maybe he discovers an ancient jutsu that links his soul to the very essence of the ninja world. Another idea is Orochimaru teaming up with Naruto to face a new, greater threat, and in the process, Naruto starts to understand Orochimaru's pursuit of immortality from a different perspective. And perhaps Orochimaru could create a new form of immortality that is more about passing on his knowledge and skills in a unique way rather than just living forever physically.