One common theme could be Naruto feeling isolated after being betrayed. He might start to question his relationships and his place in the ninja world. For example, in some fanfictions, he could withdraw from his friends in Konoha and go on a solo journey to find himself.
Often, there is also a theme of Naruto's growth through betrayal. He may become more cynical at first, but then use the experience to become a stronger and wiser ninja. This could involve him learning new jutsu or developing new strategies to deal with future threats.
One common theme is redemption. Naruto, after being betrayed, often seeks to redeem himself or prove his worth in the eyes of others, especially the females in his harem. Another theme is trust. Since he was betrayed, rebuilding trust becomes crucial in his relationships with the harem members.
One common plotline could be a character from Naruto being transported to the DxD world and feeling betrayed by the new characters they meet. For example, they might trust a devil at first but later find out they were being used for some dark purpose. Another plotline could involve a Naruto character's skills being exploited in the DxD world in a way that makes them feel betrayed by their own abilities. Maybe their power is harnessed in a way that goes against their moral code.
One common theme is Serena leaving Ash for another trainer. This could be because she is lured by the other trainer's success or power. Another theme might be Serena being forced to betray Ash due to some external threat or blackmail. For example, a villainous team might threaten her friends if she doesn't side with them against Ash.
One common theme could be friendship broken. For example, if Percy is betrayed by his friends from Camp Half - Blood, it might explore how that shatters their once - strong bonds. Maybe they start to question their loyalty to each other.
The themes usually include revenge. After being betrayed, Naruto may be tempted to seek revenge on those who wronged him. Also, redemption is a theme. Sometimes, the ones who betrayed Naruto later realize their mistake and try to make amends. And there's always the theme of growth. Naruto grows stronger, both physically and mentally, through the experience of betrayal.
One common theme is heartbreak. When there's a betrayal in the AdvanceShipping relationship, it often leads to intense heartbreak for the characters involved. They have to deal with the pain of being let down by someone they trusted.
In such fanfictions, a prevalent theme is broken trust. Ash and Iris could have been on a journey together when suddenly Ash meets someone new who convinces him to change his path, leaving Iris behind. This would make Iris feel betrayed. Another theme could be related to secrets. If Ash has been hiding something important about his Pokemon training methods from Iris, and she finds out in a bad way, it can create a sense of betrayal. Also, the theme of jealousy can come up. If Ash gets more attention or praise from other trainers for his Pokemon, Iris might feel left out and betrayed, thinking Ash doesn't care about her feelings or achievements.
Well, in these fanfictions, a frequent theme is trust issues. After being betrayed, Fem Ash will surely struggle with trusting others again. Growth is also a theme. She has to grow stronger, both mentally and physically, to face the situation. And then there's the theme of isolation. Sometimes, she might isolate herself from others because of the pain of betrayal.
One common plotline is betrayal by a close friend. It could be someone from his village that he trusted, like a fellow ninja. They might reveal a secret or side with an enemy, making Naruto feel like he's been stabbed in the back.
A frequent theme is the exploration of Naruto's dark side. When abandoned and betrayed, he may experience anger and resentment. This can lead to him having to battle his inner demons. Also, the theme of redemption for those who wronged him might be present. Some characters who abandoned or betrayed Naruto might later realize their mistakes and try to make amends, which creates an interesting dynamic in the fanfiction.