One possible theme could be sacrifice. Rose may have to sacrifice her own time, relationships or even her life in the time war. Another theme might be redemption. Maybe she has a past she wants to make up for through her actions in the war.
In 'rose fights in the time war fanfic', perhaps Rose is a hero. The time war setting allows for all kinds of exciting plot twists. For example, she might have to deal with different versions of herself from various timelines. The fanfic could also delve into the moral implications of her actions during the war, like whether she should sacrifice one timeline to save another. It's really a fertile ground for creative storytelling.
Well, one possible plot development could be that Rose tries to find a way to communicate with the Doctor across different time periods within the Time War. Maybe she discovers some ancient Time Lord technology that can send messages through the chaos of the war.
Survival. Since it's a war situation in 'The 100', survival is likely a major theme. Characters will be fighting for their lives and trying to meet their basic needs like food, water, and safety.
Friendship is a great theme. Their relationship in the original series has elements of friendship that can be explored more deeply in a fanfic. For example, how they support each other through tough times.
Another theme could be adventure. They could go on a journey together, facing various challenges, and their relationship could be strengthened through shared experiences during the adventure. This might involve battles against common enemies or exploring new and mysterious places.
In some fanfics, it could be a competition gone wrong. For example, a friendly sparring match between Percy and Artemis turns into a full - fledged fight due to some external interference like a magic spell or a cursed weapon. This could lead to a series of events where they have to put aside their differences and work together to solve the problem that caused the fight in the first place.
Maybe Harry discovers a hidden part of the wizarding world that uses guns as a form of magic - enhanced weaponry. So he has to learn how to use these guns in combination with his magic to defeat a powerful villain. For example, the guns could be enchanted to fire spells instead of normal bullets, and Harry has to master this new form of combat.
The idea of Arthur fighting a war in a fanfic is appealing because it gives a new perspective on a well - known character. It's exciting to see how he'll handle the chaos and danger of war.
Possible themes in such fanfiction include the power of connection. The kiss is a physical manifestation of the deep emotional connection between the doctor and Rose. It can also be about new beginnings. After the kiss, they might embark on a new journey together, either in their relationship or in their adventures. Additionally, themes of redemption could be present. If one of them has made mistakes in the past, the kiss could be a step towards redemption in the eyes of the other.
One possible theme could be love. Maybe it's a romantic love story set in Ireland. Another theme might be family, as Irish families often have strong bonds and traditions.