Common elements in a betrayed story include a false appearance. Before the betrayal, the betrayer might seem very trustworthy and friendly. There's also usually a moment of discovery, when the victim realizes they have been betrayed. This can be a very painful moment. Additionally, there is often a feeling of being used. The victim feels that the betrayer used their trust or kindness for their own selfish ends. And in many cases, the betrayal leads to a breakdown of the relationship, which can have long - lasting emotional effects on the victim.
Trust is a common element. Usually, there was some level of trust that was broken. Also, there's the presence of two parties, the betrayer and the one with the betrayed heart.
Anger. A wife who has been betrayed often feels angry. She has been wronged and her trust has been violated. She may feel like she has been made a fool of.
A common plot element is the shock of betrayal. Issei is usually shown as a trusting character, so when he is betrayed, it's a huge emotional blow. Another element is his struggle to come to terms with it. He might question his own judgment and relationships. Also, often there is a part where he decides whether to seek revenge or forgiveness. For example, in some fanfictions, he initially wants revenge but then realizes that forgiveness might be a more noble path.
Jealousy can also play a part. If one partner is overly jealous and controlling, the other might feel suffocated and end up betraying the relationship as an act of rebellion. Also, personal insecurities can be a cause. For example, if someone has low self - esteem, they may seek validation from others outside the relationship, which can result in betrayal.
One common theme is secrecy and exposure. As in the body gives away the hidden gay feelings that one was trying to keep private.
A common plot element could be a misunderstanding leading to the betrayal. For example, rin might misinterpret izumo's actions as being against him, when in fact there was a good reason behind it. Or vice versa.
Often in these fanfictions, there's also an element of Tim Drake trying to heal from the hurt. He might isolate himself from others at first, but then gradually start to open up again as he realizes he can't let the betrayal define him. This could involve him finding new allies or reconnecting with old friends who prove their loyalty.
One common theme is isolation. When Percy is betrayed, he often feels alone and has to face challenges by himself.
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.
Guilt is also a big theme. The betrayer often feels guilty, and this can drive their actions later in the story. In some novels, the guilt is so overwhelming that it becomes the main focus of the character's development. Like in 'Crime and Punishment', Raskolnikov's guilt over his crime (a form of betrayal of society) is a central theme.