Power struggle is also a theme. Her new bloodline powers might make her a target, or she might have to fight against others who want to use her bloodline for their own gain. This can lead to intense battles and political intrigue within the story world. In some fanfictions, Sakura has to navigate between different factions who are all interested in her bloodline in one way or another.
A third common theme is redemption. If Sakura was previously seen as a weak character, her bloodline powers can be a way for her to redeem herself in the eyes of others. She can prove that she is more than what people initially thought of her. This often involves her training hard to master her bloodline powers and then using them to save the day or gain the respect of her peers.
One common theme is self - discovery. Sakura usually starts off not knowing about her bloodline, and as the story progresses, she learns more about herself and her powers. For example, she might discover she has healing abilities far beyond what she thought, which is related to her bloodline.
Power growth is a significant theme. In these fanfictions, Sakura usually starts with a basic understanding of her flower bloodline but as the story progresses, she grows in power. For example, she might start by just being able to sense the presence of certain flowers related to her bloodline and end up being able to control them completely. Also, the theme of family legacy often comes up as her bloodline is something passed down through generations.
In 'Naruto has a fire bloodline' fanfiction, a frequent theme is exploration of his heritage. Since the fire bloodline is not part of the original Naruto's abilities, it often leads to stories about his family history and where this bloodline came from. Additionally, there's the theme of rivalry. With new powers, Naruto might face new rivals, either from within the village or from other villages. This can create exciting new story arcs full of intense battles and character development. And of course, the theme of self - discovery is always present as Naruto figures out how to use his new powers effectively.
Power exploration is also a big theme. Writers often take the opportunity to create unique and powerful abilities based on the animal bloodline. They might describe how a character can transform parts of their body into an animal form, like having fox ears and a tail for a character with a kitsune bloodline, and how they learn to control and use these abilities in combat or in daily life. And this exploration of power can lead to some really exciting action scenes in the fanfiction.
Often, the theme of heritage and legacy is present. Since the bloodline involves memories, it could be memories of his ancestors. So, Naruto is connecting with his family's past, understanding their struggles and achievements. This also ties into the theme of changing the ninja world for the better. By learning from the past through the bloodline memories, Naruto can make different choices and impact the future of the ninja world in a positive way. He might use the wisdom from the memories to end clan feuds or improve relations between villages.
One common theme could be Sakura's growth within the clan. For example, she might have to prove herself and overcome challenges to gain acceptance.
A common theme is protection. The older brother often acts as a protector for Sakura, shielding her from various threats.
I'm not sure specifically what that fanfic is about as there could be many interpretations. It might be about a character named Sakura who has a special bloodline, perhaps with unique powers or a complex backstory related to her lineage.
One common interpretation is that her bloodline gives her enhanced medical ninjutsu abilities. Since she is already a skilled medical ninja in the original series, fanfiction might expand on this by making it a part of her bloodline heritage. Another is that her bloodline could be related to a hidden strength, like a dormant power that awakens under certain circumstances, such as extreme stress or when she is in danger of losing someone she loves.
A common theme is power struggle. Naruto often has to grapple with the powerful and sometimes uncontrollable abilities of his demon bloodline. Another theme is isolation. People in the Naruto universe might fear or be jealous of his unique bloodline, causing Naruto to feel isolated at times.
Power discovery. Since the Uzumaki bloodline is powerful, a common theme is Naruto finding out about his hidden powers. For example, he might discover a new form of chakra control or a special jutsu related to his Uzumaki heritage.