His connection to the Marauders is a big theme. Fanfics might focus on the adventures of the Marauders (Sirius, James, Remus, and Peter) during their school days. This could include their pranks, their study of magic, and how their friendship was formed and tested over time. It gives a more in - depth look at Sirius's character within the group dynamic.
One popular theme is his relationship with Harry. Since Sirius is Harry's godfather, many fanfics explore how he could have been a more active part of Harry's life if not for his imprisonment. Another theme is his loyalty to his friends, especially James Potter. Fanfics might show flashbacks of their time together at Hogwarts.
The theme of his struggle against the false accusations and his time in Azkaban is also quite common. Writers often delve into how he managed to keep his sanity during those long years in prison and his determination to prove his innocence. Additionally, his relationship with the Order of the Phoenix is another popular theme, showing his contributions to the fight against Voldemort.
One common theme could be miscommunication. Maybe Harry misunderstands Sirius' actions or intentions, leading to a situation that appears to be abuse. Another could be power dynamics, if the fanfic plays with the idea of Harry having some sort of power over Sirius in an unexpected way. But again, this is a very different take from the original story.
One popular theme is the 'what - if' scenarios. For example, what if Voldemort had never existed? How would the wizarding world be different? Another theme is the exploration of different magical creatures in more depth. Fanfic writers often create new adventures involving creatures like hippogriffs or thestrals.
One common theme is the struggle with identity. Since her father was Sirius Black, she has a complex family history. She often has to figure out who she is in the shadow of her father's fame and infamy. Another theme is loyalty. She might be loyal to her father's friends, like Harry, Hermione, and Ron, and fight alongside them. Also, the theme of magic discovery is common. She discovers new magical abilities that are either related to her father or are completely unique to her.
Another option is to join Harry Potter fanfic - related forums. These places usually have sections dedicated to different types of fanfics. You can post a request for gay Sirius Black fanfics and I'm sure the community will be happy to share some of their favorites.
One popular theme is their friendship. Given Luna's eccentric nature and Harry's often - burdened state, their friendship can be a source of comfort and support for both. Another theme could be their exploration of the wizarding world's mysteries. Luna's knowledge of the less - known aspects of magic can pair well with Harry's inquisitive nature.
Her connection to the Gryffindor house is also a common theme. Some fanfics focus on her pride in the Gryffindor students and how she upholds the values of the house. She could be shown guiding Gryffindors through tough challenges and helping them grow into true Gryffindors.
Some fanfics might show female Harry Potter as a strong leader in Hogwarts. She could form a new club or group that focuses on different aspects of magic than what is taught in regular classes. This would attract students from all houses and she would have to deal with the politics within the school as well as the external threats from the Dark Arts. It would be a story of her growth and influence in the wizarding community.
The Hogwarts setting is always a plus. In fanfics about James Sirius Potter, we get to see Hogwarts from a new perspective. He might explore parts of the castle that we haven't seen much in the original series. Also, his relationships with new professors and students add new layers to the story.
One popular theme is her motherly love. In many fanfics, her care for her children and how she extends that love to Harry Potter is explored. For example, she might be shown knitting sweaters for everyone in the group during a cold winter at Hogwarts.
One popular theme is the power struggle. Fans often write about how Harry and Voldemort vie for control over the wizarding world. Another is the exploration of their magical abilities. Writers might create scenarios where they face off in unique magical duels. Also, the idea of fate and prophecy is common. How the prophecy about Harry being the one to defeat Voldemort shapes their relationship and actions.