Well, the fanfiction could start with Rin being held hostage by a powerful and evil shinobi. Obito, who has been secretly following Rin to protect her, jumps into action. He first assesses the situation and the capabilities of the enemy. Then, he uses his skills, like his kamui ability to surprise the enemy. He might also call upon some allies he has made during his travels. In the end, he rescues Rin, and their bond grows even stronger as a result of this ordeal.
In an 'Obito Saves Rin' fanfiction, perhaps Rin is in a dangerous situation in a different dimension. Obito, having traversed various realms himself, manages to find her. He has to face the strange and powerful creatures of that dimension. His love for Rin drives him to overcome all obstacles. He might use his unique space - time ninjutsu to get them both out of there safely.
One possible plot could be that Obito arrives just in time to save Rin from being captured by enemy ninjas. He uses his Sharingan abilities to outwit the enemies and then escapes with Rin. Maybe he has to fight through a horde of strong opponents, but his determination to save Rin gives him the strength to persevere.
One idea could be that Kakashi travels back to the moment right before Obito's 'death'. He uses his knowledge of future events to prevent the cave from collapsing on Obito. Then, together they are able to rescue Rin more effectively and change the whole tragic course of events.
One potential antagonist could be the Hidden Mist ninjas. They are known for their ruthless tactics, and they might target Rin for some strategic reason. Maybe they think she has valuable information about Konoha's defenses.
The plot could be really interesting. Since Obito has been through so much, he might train Naruto in a more unorthodox way. Rin, on the other hand, would provide a more nurturing and moral compass for Naruto. They could also influence Naruto's relationships. He might not have the same bond with Sasuke or Sakura as in the original. Instead, he could form new alliances based on what he learned from Obito and Rin.
Their relationships would become much stronger. Kakashi would no longer have to bear the guilt of Obito's 'death' and Rin's loss. Obito would be extremely grateful to Kakashi for saving his life and would likely view him as an even greater friend and ally. Rin would also be happy to have both of them by her side, and they could form a very tight - knit team.
A good Rin and Obito fanfiction should have strong characterizations. Since we already know the basic personalities of Rin and Obito from the original story, the fanfiction should build on that and show new aspects of their characters. For example, how Obito might have changed if Rin had survived.
One great Rin and Obito fanfiction is 'A Different Path'. It explores an alternate universe where Obito returns to the village earlier. The story delves deep into their relationship, showing how they might have interacted and grown together. The character development is really well - done, and it gives a fresh perspective on their bond.
Long - lost love is also a popular theme. Sometimes, due to various circumstances in the Naruto universe, they are separated, and the fanfictions focus on how their love endures over time and distance. Also, the theme of unrequited love can be explored, where one might think the other doesn't feel the same way at first, but then the story unfolds to show otherwise.
One possible plotline could be a what - if scenario. For example, what if Obito didn't 'die' and he and Rin finally confessed their feelings and shared a kiss. Another could be a time - travel plot where Obito gets a chance to go back and change things, leading to a kiss with Rin.
A possible plot is that Obito and Rin are living in a peaceful village when Rin finds out she is pregnant. They then start to plan for their future as a family. However, rumors start to spread in the village that the baby might have some special powers. This causes some unrest among the villagers. Obito and Rin have to work together to convince the villagers that their baby is just a normal child and that they only want a peaceful family life.
Well, Naruto has a lot of unique abilities. He could enter Sage Mode and use his enhanced perception to outmaneuver Obito. Konan, on the other hand, is a very skilled fighter herself. But against Obito's Sharingan and his space - time ninjutsu, she might be at a disadvantage. Naruto could use his talk - no - jutsu to make Obito realize the error of his ways and stop attacking Konan. This would be a very Naruto - like way to end the confrontation.