In a hypothetical 'Big Cock Naruto Starfire' fanfiction, the plot could be about Naruto finding himself in Starfire's universe or vice versa. There could be a plot where they have to overcome cultural differences between their worlds. For example, Naruto's ninja way might be very different from Starfire's Tamaranian values. And they could learn from each other and grow as characters while facing challenges together. However, this is all speculation as such a specific fanfiction may not actually exist.
There may or may not be such a specific 'Big Cock Naruto Starfire' fanfiction. Naruto fanfictions usually explore different aspects like character development, alternative storylines, and relationships. It's possible that some creative writer has combined elements in an unexpected way, but it might also be a very rare or non - existent combination. You could try reaching out to Naruto fanfiction communities to inquire.
In a very speculative sense, if there is a 'big cock naruto devil' fanfiction, it could involve a plot where the devil is a symbol of Naruto's inner demons. Naruto has always had to overcome great challenges in the original story, and in this fanfiction, these challenges could be personified as a devil. The 'big cock' part could be a really odd way of showing his new - found, perhaps more aggressive or primal side due to this inner struggle. There could be a complex story of Naruto trying to regain his true self while dealing with this devil - influenced state, and his interactions with other characters would be drastically different as a result.
One possible plotline could be that Naruto somehow ends up in Starfire's universe. He meets her and is immediately intrigued by her different appearance and powers. They start off as friends but gradually develop feelings for each other as they go on adventures together and protect her planet from various threats.
The origin of Naruto's starfire powers in fanfiction might be due to an experiment. Some rogue ninja or a secret organization could have been conducting experiments with celestial energy. Naruto somehow gets caught in one of these experiments and as a result, he gains the starfire powers. Another possibility is that it's a gift from the stars themselves. Naruto has always been a special character, and the stars, seeing his potential and pure heart, decide to grant him these powers to help him on his journey.
In a 'Naruto is Ranma' fanfiction, a possible plot could involve a powerful villain who wants to use the powers of both Naruto's ninja world and Ranma's world for evil. Naruto and Ranma would then have to team up, along with their respective friends. Naruto could teach Ranma's friends some basic ninja skills, and Ranma could show Naruto's friends how to handle his transformation curse. This would lead to a lot of comical and action - packed situations as they fight the villain and try to save both worlds.
One plot could be that Naruto is discovered by a traveling minstrel who sees his potential and decides to train him. As he becomes a singer, he uses his new - found fame to promote peace between the villages, using his songs to tell the stories of the ninja world and the importance of unity.
A possible plot could be that Naruto's chakra system is damaged, which leads to his legs being paralyzed and him using a wheelchair. He then embarks on a journey to find a cure, facing various challenges along the way. This could involve him meeting new characters who either help or hinder his quest.
One possible plot could be that Naruto is created by some sort of scientific experiment gone wrong in the Naruto universe. He then has to deal with the fact that he's different from other ninjas. Another plot could be that someone tries to use Naruto's 'Frankenstein - like' nature to gain power, and Naruto has to fight against that exploitation.
Well, without having read any from this 'big cock family' specifically, in Naruto fanfiction in general, we often see unique takes on the ninja world. It could be that this type might have its own set of character interpretations that are different from the canon. Maybe it focuses on a particular family or group within the Naruto universe and gives them a more central role with their own special traits or abilities. However, this is just speculation as I don't know the exact nature of this 'big cock family' related fanfiction.
Since this is a rather odd combination, it's hard to define specific characteristics. However, if we consider Naruto and Moka separately in fanfiction, Naruto - related fanfictions often have elements of ninja skills, village politics, and his journey to become stronger. Moka - related (assuming from Rosario + Vampire) would have vampire and school - life elements. But this 'big cock' addition makes it hard to categorize in a normal sense.