One common theme is loyalty. The little brother is often portrayed as being extremely loyal to Sephiroth, no matter what. Another theme is discovery. The little brother might be on a journey to discover his own identity, which is often tied to his relationship with Sephiroth.
The theme of growth is quite common too. As the story unfolds, the little brother grows both in strength and character. This can be physical strength, like learning combat skills, or emotional strength, such as dealing with difficult situations or the complex relationship with Sephiroth. It makes the character more relatable and the story more engaging as we see his transformation over time.
Family and protection are also prevalent themes. Even in a fictional context, the idea of family is important. The little brother may be in need of protection from Sephiroth or vice versa. And sometimes, they both have to protect each other from external threats. For example, in some fanfictions, there are enemies that target them because of Sephiroth's status or the potential power of the little brother. This creates a lot of drama and action within the stories.
Protection is a very common theme. The big brother often takes on the role of protecting the little brother from harm, whether it's physical danger or emotional distress.
One common theme could be power. Both Harry and Sephiroth are associated with great power in their respective universes. So, fanfictions might explore how Harry's new - found connection to Sephiroth affects his power levels or how he uses it. Another theme could be identity. Harry having elements of Sephiroth in him might make him question who he really is.
Isolation is also quite prevalent. Vampires are often solitary creatures, and Sephiroth, being as complex as he is, is shown to be isolated even more so in these fanfictions. He may be shunned by others due to his vampiric state, or he may choose to isolate himself because of his new - found powers and the thirst that comes with being a vampire. And there's also the theme of the unknown. His vampiric abilities and how they work are often a mystery, and the fanfictions usually unfold this mystery gradually.
One common theme is redemption. Many fanfictions try to explore the possibility of Sephiroth finding redemption through his interactions with the original character. For example, the OC might show him a different way of life or values.
One common theme is self - discovery. Sonic's little brother often has to figure out his own place in the world, whether it's in relation to Sonic or on his own terms. Another theme is family. It explores the relationship between Sonic and his little brother, the love, the rivalry sometimes, and how they support each other.
The theme of friendship also runs through a lot of 'naruto little brother fanfiction'. Just like Naruto, the little brother forms friendships with other ninja. These friendships can be tested in different ways, such as when they have different goals or when they are faced with difficult decisions. For example, a friend might ask the little brother to break a village rule to help them, and the little brother has to decide between loyalty to his friend and loyalty to the village.
Family relationships are a common theme. Since Harry is a little brother in these fanfictions, there's often exploration of his bond with his siblings, like how they protect each other or have sibling rivalries. Another theme could be self - discovery. As a little brother, Harry may have different aspects of his identity to figure out compared to the original story.
One common theme is survival. Given the harsh environment of Rapture, fanfictions often center around how the Little Brothers manage to stay alive among the splicers and other threats.
The theme of growth is also prevalent. Ron starts as the little brother but as the story progresses in the fanfiction, he can grow into his own person, learning to stand out and be confident despite his position in the family. This growth can be both in terms of his magical abilities and his personal relationships.
Growth and self - discovery are themes that often appear. The little brother may start as a naive character and through the events in the fanfiction, he learns more about himself, his abilities, and his place in the world. This could be triggered by Tobias's actions or simply by the situations the little brother finds himself in, like facing a difficult enemy or making a tough moral choice.