Well, a frequent theme is her identity as a Saiyan. Fanfictions often explore how she balances her Saiyan heritage with her life on Earth. Adventure is another big theme. She goes on all sorts of quests and battles in many fanfictions. Also, the theme of redemption can be found in some. Maybe she has to make up for a past mistake or save someone she once wronged.
Friendship is a very common theme. Since they are both Saiyans and have grown up together in some fanfictions, their bond is often explored. They rely on each other in battles and in daily life.
One common theme is time - travel adventures. Since Future Trunks is known for his time - traveling, fanfictions often explore different time - travel scenarios involving his female counterpart. For example, she might go back in time to change certain events in the Dragon Ball timeline.
One common theme could be the exploration of an unlikely relationship. Given Broly's wild nature and Trunks' more composed personality, stories might focus on how they overcome their differences. Another theme could be adventure, as they might go on quests together in some of the fanfictions.
The theme of friendship and partnership is also quite prevalent. Since they are from different worlds, they have to rely on each other. They start as strangers but gradually become friends and partners. This development of their relationship is a key aspect in many 'female Harry Potter and Trunks fanfiction' stories.
A lot of fanfictions focus on her relationships. It could be her relationship with her family members in a different way than in the original series, or her forming new friendships or even romantic relationships with other characters. Also, the theme of her dealing with the aftermath of battles and protecting the Earth is quite common.
One common theme is time-travel. Since Trunks is known for his time - traveling adventures, many fanfictions explore this aspect further, like dealing with the consequences of changing timelines.
The theme of heroism is quite prevalent. Mirai Trunks is a hero in his own right, and fanfictions often showcase his heroic deeds, whether it's saving the world from a new threat or just helping those in need in his own timeline. Also, the theme of self - discovery is common as he tries to figure out his place in the world and his purpose.
Well, self - discovery is also a common theme. Both Trunks and the OC learn more about themselves through their interactions. In some fanfictions, the OC discovers their true origin or purpose while being with Trunks. And of course, the theme of saving the world or universe is prevalent. They team up to fight against powerful villains and protect their world.
One common theme is the exploration of their relationship. Since they come from different 'worlds' in a sense (Trunks as a Saiyan and Android 18 as an android), their interactions can be really interesting. They might start as enemies or at least not friends and then develop a bond.
A common theme is protecting loved ones. When Trunks sees his family or friends in harm's way, he gets mad and is driven to take action. Another could be revenge. If someone wrongs him or his loved ones, his anger fuels his desire for revenge in the fanfiction.