One great fanfiction could be 'Marinette's Unbound Locks' where she lets her hair down during a special moment at a school dance. It beautifully describes how her long hair frames her face and adds to her charm as she shares a dance with Adrien.
A common plotline is Marinette's hair being down as a sign of a transformation in her character. For example, she might let her hair down when she decides to be more assertive or when she's finally coming to terms with her feelings for Adrien. It shows a more vulnerable and yet confident side of her.
Well, Vegeta would be a likely character. He might be initially suspicious of the female Goku. Maybe he thinks she's a threat or just can't believe there's another Goku - like being. He could be there to add some comical moments as he tries to understand the situation.
In general, it's a bit of a toss-up. The strength of Manga Goku and Anime Goku can vary depending on the specific arcs and battles. Sometimes, it might seem like one is stronger in a particular situation, but that could change in another.
Another possible main character could be the villain that forces the two Gokus to meet. This villain could be a new, super - powerful threat that the two Gokus need to deal with. Their meeting becomes a crucial part of the story to defeat this powerful foe.
Blowing hair would cause damage to the hair that had already grown out, resulting in damage to the hair quality, dryness, and other problems, but it would not affect the newly grown hair. After the hair is rinsed, it is recommended to pay attention to your living habits, strengthen your exercise, avoid staying up late, eat more fresh green vegetables and fruits, and promote better hair growth. As for whether the new hair would grow better, there was no clear answer in the information given so far.
One of the characters who could betray Goku is Piccolo. Although they've been allies for a long time, in fanfiction, things can change. Perhaps an ancient evil force takes control of Piccolo's mind and makes him turn on Goku. Or it could be Krillin. He might be influenced by an outside force that convinces him Goku is becoming too dangerous. Also, don't forget about the Kais. If there's some sort of power imbalance or a threat they perceive from Goku, they might betray him to maintain the order of the universe in the fanfiction.
Well, it could be about Goku Jr learning some of Goku's most powerful moves. Maybe Goku teaches him the Kamehameha. They might also go on an adventure together, like fighting a new and powerful enemy that neither could face alone.