A major theme in 'Harry Clings to Sirius fanfic' is the search for identity. Harry is growing up and trying to figure out who he is. Sirius, having his own complex identity, helps Harry in this journey. Harry clings to him as he provides a stable presence during Harry's identity - finding process. Additionally, the theme of healing from past traumas is also present. Both Harry and Sirius have had difficult pasts, and they help each other heal in these stories.
A fanfic that I think is really good in terms of the 'Harry Clings to Sirius' theme is 'In Sirius' Arms'. It focuses on Harry's need for Sirius' presence in his life. The story takes place during a particularly tough time at Hogwarts for Harry, and Sirius is his only source of comfort. The author does a great job of showing how Harry's bond with Sirius is different from his other relationships. For example, Harry is more open and vulnerable with Sirius compared to his friends at school.
Rebellion against the status quo can also be a theme. Sirius is a bit of a rebel, and he encourages Harry to question things. So in many fanfics, they might be involved in actions that go against the traditional rules of the wizarding society. And of course, the theme of friendship - a deep, unbreakable friendship that could be seen as more than just friendship in some interpretations.
The theme of loyalty is quite prevalent. They are loyal to each other no matter what. Fanfics might show how this loyalty is tested and how they always come out on top. Also, the exploration of the magical bond between them, which could be stronger than just a normal friendship or family tie, is a common theme.
One common theme is family. Since Sirius is adopting Harry, it explores the idea of creating a new family unit. It often shows how they bond and become a family in their own way.
In 'sirius x harry fanfic', the theme of self - discovery for Harry is quite common. With Sirius by his side, Harry learns more about himself, his parents, and his place in the wizarding world. Another theme is the exploration of the magical bond between them, which is often a central element that drives the plot and the development of their relationship.
Friendship is also a major theme. They share a unique friendship that is different from normal friendships. In these fanfics, it's often shown how they support each other through difficult times. For example, when Harry is facing problems at Hogwarts, Sirius and Remus are there to give him advice and stand by his side. And of course, the theme of magic and adventure is always present as they are part of the wizarding world and have to face various magical threats together.
Common themes in these fanfics can vary. There could be the theme of Sirius spoiling Harry with knowledge. Since Sirius has a lot of experience in the wizarding world, he might share some of the more secret or restricted knowledge with Harry. This could range from spells that are not taught at Hogwarts to the inside scoop on certain wizarding families. Another theme is Sirius using his connections to get Harry special treatment. For instance, he could pull some strings to get Harry a prime seat at Quidditch matches or an exclusive invitation to a wizarding event. All these themes contribute to the overall idea of Sirius spoiling Harry in the fanfic world.
One common theme is the father - son dynamic. Since Sirius acts as a father figure to Harry, Harry calling him sir can emphasize this relationship. It can show Harry's respect for Sirius' authority and wisdom.
One common theme is protection. Sirius feels an overwhelming need to protect baby Harry, given what has happened to his parents. Another theme is the idea of family. Even though Sirius isn't Harry's father, the bond between them is portrayed as very strong, like a family bond. And there's often a theme of hope as well, that with Sirius in Harry's life, there's a glimmer of a better future for Harry.
Another theme is family. Since Harry lacks a proper family, Sirius becomes like family to him. Fanfictions explore how they create a family - like bond in the absence of Harry's real family. It can be really emotional.