One common theme could be unrequited love. In many fanfictions, the lost lover might be someone the main character pines for but can't have. Another theme could be redemption. Maybe the lost lover has made mistakes in the past and the story is about them making amends. Also, the theme of self - discovery can be present. As the characters deal with the loss of their lover, they might learn more about themselves.
Well, often there's the theme of longing. The characters in 'the lost lover fanfiction' usually long for the return or the presence of their lost love. Mystery is also a theme. There could be secrets surrounding the lost lover, like why they left or what their true intentions were. And then there's the theme of heartbreak. It's almost a given in this type of fanfiction, as the characters have to deal with the pain of losing someone they love.
One common theme is redemption. Maybe Voldemort has a chance at redemption through his relationship with Harry. Another theme is the power of love. It could be that their love is so strong that it can change the course of the wizarding war. Also, identity exploration is a big one. Harry has to figure out who he is now that he has this new relationship with Voldemort.
I can't really say for sure as I'm not familiar with this specific fanfiction. But generally in fanfiction, themes like love, family, and self - discovery can be common.
One common theme is the struggle against society. Since their relationship might be seen as unconventional, they often have to face opposition from the world around them.
One common theme is friendship. Young characters in the Lost Girl world often form strong bonds with each other, facing various challenges together. For example, they might support each other when dealing with the discovery of their supernatural powers.
One common theme could be the search for identity. Since the fairy is lost, it might be on a journey to figure out who it really is. Another theme might be about friendship, as the lost fairy may encounter other characters who help it along the way.
The theme of survival is often present. Being lost in the Naruto world can be dangerous, so characters have to find ways to survive. They might have to deal with hostile ninja clans or dangerous beasts. Another common theme is the search for a way back. Whether it's back to their own time, place, or to their friends, the character is constantly striving to return to what they consider 'home' in the Naruto universe.
One common theme is isolation. When Batman is lost, he is often alone in a strange situation, like being stranded on an uncharted island or in a different dimension. This isolation forces him to rely on his own wits and skills more than ever.
Rescue is a common theme. For example, like in the story of the girl and the stray kitten. People often rescue animals from difficult situations. Another theme is companionship. Just as the boy and his dog were always together. And caregiving is also a big theme. The old man taking care of all the animals on his farm shows this.
In wife and lover stories, a recurring theme is betrayal. The husband's act of having a lover is seen as a betrayal of the marriage vows. Another theme is redemption. The husband may try to redeem himself in the eyes of his wife. And communication, or lack thereof, is a theme too. Often, the lack of communication in the marriage leads to the situation of a lover in the first place.
The theme of secrecy also frequently appears. Yandere characters usually try to hide their true, psychotic nature from their love interest. They act normal on the surface but are constantly scheming in the background. Also, the theme of sacrifice is there. Sometimes, the yandere might sacrifice their own well - being or the well - being of others in the name of their 'love'. They believe that their actions are justified because of their intense feelings.