Who could be the author of 'luffy has a secret fanfiction'?

Well, it could be about Luffy having a secret power that no one in the Straw Hat crew knows about. Maybe it's a power that he got from a mysterious encounter and he's keeping it a secret to protect his crew from potential danger.

It could be Hinata. In the original series, Hinata has a deep affection for Naruto. In a fanfiction, it would be a natural progression for her to be his secret fiance. Maybe they got engaged secretly to avoid some political unrest in the village.

It might also be Gaara. Their initial encounters were filled with tension, but as the story could be twisted in fanfiction, that could develop into a different kind of relationship. Gaara's own journey of self - discovery and Naruto's influence on him could be a basis for a romantic relationship in fanfic.

The author could be a relatively new writer in the fanfiction world who is trying to make a name for themselves with this creative concept. Maybe they were inspired by other Naruto fanfictions or by the original Naruto series itself. They might be someone who has a deep love for the Naruto universe and wanted to add their own unique twist to it by giving Naruto 12 wings.

It could be an original character created just for this fanfiction. Maybe a girl who Stiles met during a summer vacation and had a brief fling with.

The father might be a character who is in a position of power and Sakura is afraid of the consequences if his identity is revealed. For example, he could be a nobleman or a powerful wizard in a magical world. Since having a relationship with him might be frowned upon or dangerous, she keeps the baby a secret.

It could be Ginny. Even though in the original story they are married and have kids in a more normal way, in fanfiction, there could be a twist where their relationship had a secret earlier on and she is the mother of the secret child.

It could be a random villager that Naruto met during one of his travels. Maybe she was from a small village that Naruto helped protect, and they had a brief encounter that led to the child.

It could be an old acquaintance that Percy had a brief relationship with. Maybe someone he met during one of his adventures and then lost touch with, but she later discovers she's pregnant and decides to keep the child a secret from Percy for various reasons.

The mother could also be a completely new character created specifically for this fanfiction. She might be from a different realm or have some special powers. And her relationship with Percy could be a complex one, filled with secrets and misunderstandings that led to the situation of having a secret daughter.