One idea could be a story where Female Kakashi and Obito are on a mission together in a mysterious land filled with ancient magic. They have to rely on each other's skills to survive and in the process, they start to see each other in a new light.
One great Kakashi x Obito fanfiction is 'The Bonds We Share'. It delves deep into their relationship, exploring how their past experiences shape their interactions in a post - war Konoha. It shows their growth and how they come to understand each other on a deeper level.
Kakashi could use his Sharingan to analyze Obito's moves and find a weakness in his defenses. Since he has the Sharingan, he might be able to predict Obito's attacks and counter them effectively, eventually finding an opportunity to break free.
A lot of fanfictions explore their relationship from a more emotional and psychological perspective. These stories might delve into how Obito's fall affected Kakashi and how Kakashi coped with the guilt. They could also show Obito's journey of redemption from Kakashi's point of view. These types of fanfictions are often deep and meaningful, without any inappropriate content.
Minato might also be a prominent character. As their teacher, he can influence the way Obito and Kakashi interact. In some fan fictions, he could be the one to help them resolve their differences or provide some crucial information about their past that changes their current situation.
Well, it could be about Kakashi finally finding Obito after a long search. Maybe Obito has changed a great deal, and Kakashi has to come to terms with this new version of his old friend. They might have a battle first due to their different paths, but then they start to talk and remember their past together, like their time as teammates in Team Minato.
One popular theme is redemption. Given Obito's past actions, many fanfictions explore his journey towards redemption and how Kakashi plays a role in it. For example, Kakashi might be the one to finally make Obito see the error of his ways.
There's also 'The Unbreakable Link: Kakashi and Obito'. This one shows their unwavering connection. It has some exciting plot twists that keep you hooked, like how they support each other in difficult situations and how their friendship endures despite all the odds.
In an 'Obito kills Kakashi' fanfiction, it could start with a long - standing grudge. Maybe Obito discovers some new information that he believes Kakashi has been hiding from him all these years. This enrages him so much that he decides to take revenge and kills Kakashi in a fit of rage during a battle.
One common theme is redemption. Since they go back in time, both Obito and Kakashi often try to atone for their past mistakes. For example, Obito might try to prevent the events that led him to become evil in the first place.