In fanfiction, evidence can be quite contrived. It might include Kakashi showing special protectiveness towards Sakura, like he's always there to save her in dangerous situations more than just as a sensei. Maybe he secretly gives her extra training or has a certain look in his eyes when he watches her grow that the author interprets as fatherly.
However, in the original Naruto series, there is no such indication. But in the fanfiction world, the author might create scenarios where Kakashi has a deeper connection to Sakura's past. Maybe he knew her parents before they died and made a silent vow to look after her, which could be presented as evidence within the fanfiction.
In most fanfictions, evidence is often created within the fictional narrative of the story. It could be things like hidden backstories, special powers passed down that suggest a connection, or certain encounters between Madara and Sakura's mother. However, in the original Naruto series, there is no such relation.
Well, in some 'snape is harry's father fanfiction', the evidence could be Snape's complex emotions towards Harry. He's often shown as having a deep, unexplained connection. However, this is completely different from the official story. The fanfiction might twist the timelines or create new magical elements to support this relationship. For example, it could suggest that Snape had a relationship with Lily before James Potter and some sort of magic made it so that he was Harry's true father, but it's all just creative and not based on the original lore.
In some fanfictions, they might create evidence like Snape secretly protecting Harry more out of a fatherly love. For example, his constant watch over Harry at Hogwarts could be seen as more than just a teacher - student relationship. But in the original books, there is no such indication.
Fanfictions often take creative liberties. In the case of 'madara is naruto's father fanfiction', the evidence might be as flimsy as a shared look or a similar power that the author forces to be a connection. But remember, this is all in the realm of fan - created stories and has no basis in the real Naruto lore.
In most of such fanfictions, they might create evidence like hidden past connections. For example, AFO could be secretly involved in Izuku Midoriya's (Deku) family history. Maybe he had a relationship with Deku's mother long ago, which led to Deku's birth. But it's all fictional speculation within the fanfiction world.
In most fanfictions, the evidence is often created within the unique narrative of the story. Maybe it could be things like similar chakra signatures, or shared memories in a dream - like state. However, in the original Naruto canon, there is no such connection, so it's all fictional speculation within the fanfiction.
In fanfiction, evidence could be things like Giovanni having a soft spot for Ash that other characters don't notice. The author might write that Giovanni has some knowledge about Ash's past or abilities that seem to suggest a closer relationship. But this is just for the purpose of the fanfiction. In the canonical Pokemon world, Ash's father has not been officially revealed as Giovanni.
Yes, in some of those fanfictions, the evidence could be things like Snape's long - standing protection of Harry. The idea is that this protection might be more than just a sense of duty to Lily. It could be a fatherly instinct. Also, some fanfics might play with the idea of a magical spell or potion that changed the apparent paternity. But remember, this is all part of the fanfiction world and has no basis in the official 'Harry Potter' canon which firmly states that James Potter is Harry's father.
Well, in the 'pokemon red is ash's father' fanfiction, the evidence might be quite tenuous. It could be something like Red's influence on Ash's journey in a very indirect way. Maybe the fanfic writer makes Red leave behind some sort of legacy or power that Ash unknowingly inherits. But this is all just speculation within the realm of fan - created stories and not based on the real Pokémon franchise.
In most fanfictions, the evidence is often fabricated within the fictional narrative created by the author. It could be things like hidden memories, secret meetings in the past that were never revealed in the original series, or some magical bond that was only known to a few. However, in the original 'Harry Potter' canon, there is no such relationship between Harry and Snape.