Family is often a common theme. Since she is Colby's sister, her relationship with her family, including Colby, can be explored in depth. It could be about family loyalty, family secrets, or how her family influences her decisions.
Friendship is another theme. She may have a group of friends that she goes on adventures with or leans on during tough times. Her friendships could be tested and strengthened throughout the fanfic.
Self - discovery is also quite common. She might be on a journey to figure out who she is, what she wants to do with her life, and what her unique qualities are. This could involve trying new things, having new experiences, and learning from her mistakes.
One great 'colbys sister fanfic' could be about her adventures in a magical world. Maybe she discovers she has a hidden power and has to go on a quest to save her family. Another might be a story where she falls in love with someone unexpected, like a character from a different social class.
Family is a common theme. The relationship between Batman and his sister often explores family loyalty, love, and how they deal with the secrets within the family. For example, in some fanfics, the sister might discover Batman's identity and they have to navigate that new situation together.
A common theme is loyalty. Siblings in fanfic often show unwavering loyalty to each other. For example, in a story where one sibling is wrongly accused, the other will stop at nothing to prove their innocence.
Another theme might be adventure. If Carolina is a place with unique landscapes or situations, the sister characters could go on adventures together there. It could be about exploring new places, meeting new people, and having exciting experiences.
Another theme is shared dreams. In many of these fanfics, the sisters have a common goal, like achieving success in the music industry. They work together and support each other's ambitions. For example, in some stories, they write songs together or go on tour as a duo. This shows their unity and shared passion.
One of the main themes is protection. Harry might feel the need to protect his sister from the dangers that lurk in the magical realm, like the dark wizards. Friendship can also be a theme as the sister might make new friends at Hogwarts, and Harry has to deal with his feelings about that. Also, self - discovery is common. The sister may be finding out who she really is and Harry is there to support her in that journey.
A common theme is redemption. Cole's character often needs to find redemption in the fanfic, especially in relation to the sisters. His actions as a demon and his relationship with the sisters drive this theme.
One common theme could be family loyalty. Since the 'Boondock Saints' are about family in a way, the sister in the fanfic might also show strong loyalty to her family members.
Survival is also a frequent theme. In the dark and dangerous world of Bioshock, the Big Sister has to survive, and in fanfics, this can be explored in different ways. For example, she may face new threats or have to adapt to changing circumstances in Rapture. Additionally, the theme of loyalty is often present. Her loyalty to Rapture or to certain individuals can be a major plot point, especially when it is tested.
Another theme might be mystery. The sister's existence could be tied to some hidden secrets in the story's universe. It could be about uncovering her past, her connection to certain events or characters, and how she affects Ciel's own journey which is often filled with mystery already.