I'm not sure which specific 'jilliam mele' you are referring to. But if it's a fictional story that is not erotic, you could try looking for books in the same genre. For example, if it's a mystery, you might like Agatha Christie's works. Her books are full of suspense and interesting characters.
You can start by doing an online search. Use search engines like Google and type in 'jilliam mele' along with relevant keywords like the genre, if you know it. For example, if it seems like a fantasy story, add 'fantasy' to the search.
It could be a new character created by the author, like a young kunoichi from a small, far - away village. She might have special powers related to nature, like the ability to communicate with animals. This would make for an interesting dynamic when babysitting Naruto, as he's always been curious about different ninja abilities.
The OC could be a mysterious ninja from a far - off land. Sasuke might think this ninja has some secret knowledge about the Uchiha clan that he wants, so he kidnaps them.
The OC could be an outcast in the ninja world. They don't belong to any major clan and are constantly on the move. Hidan might see this OC as an easy target. The OC might have some unique skills, like being able to communicate with animals, but these skills are not enough to protect them from Hidan when he decides to sacrifice them for his own dark purposes.
For character development, the OC could be an outcast in her own community. When she enters the world of Inuyasha and Koga, she finds a new sense of belonging. Koga's wolf pack could initially reject her, but through her determination and kindness, she wins them over. Inuyasha's friendship also helps her to see her own worth. As the story progresses, she becomes a strong and respected figure, not just among them but also in the wider world of demons and humans they inhabit.
It could be an exiled shinobi from a far - off land. Maybe they were wrongly accused in their own village and had to flee. They then come across Naruto and see in him the potential for change in the ninja world, so they decide to raise him with their own set of values.
Often, the OC is highly intelligent. Since Dust Release is a complex and powerful ability, they need to be smart to master it. For example, they might be able to quickly analyze battle situations.
Develop the OC's backstory. If they're from a different part of the world, explore how that culture influenced them. Say the OC is from a small fishing village in Japan. Their skills in fishing and knowledge of the sea could be useful on the island and also shape their character in terms of being resourceful and patient.
In such fanfiction, the Kakashi OC often has unique physical features. For example, they might have distinct hair color or eye shape that sets them apart.