Well, another option could be Fanfiction.net. However, not all content on there might be tagged as neatly as on AO3. You may need to dig deeper. Sometimes, if you join some Harry Potter - focused fanfiction groups on social media platforms, fellow fans might be able to point you to some specific works that feature this pairing in a yaoi context. Just be aware that the quality and content can vary greatly from one piece of fanfiction to another.
You could also try Tumblr. There are many Harry Potter fan communities on Tumblr. Some users might share or recommend yaoi fanfictions about Rabastan Lestrange and Harry Potter. Look for tags like #HarryPotterFanfiction, #RabastanLestrange, and #Yaoi. But remember, Tumblr's search isn't always perfect, so it might take some time and patience to find what you're looking for.
One common theme is the exploration of the power dynamic. Given Rabastan's dark wizard background and Harry's status as the Boy Who Lived, there can be a lot of tension in their relationship. Another theme is the idea of redemption. Rabastan being a Death Eater, some fanfictions might explore if he can be redeemed through his relationship with Harry.
If Rabastan is captured by Harry and his friends, in captivity, he could start to have conversations with Harry. They might find that they have some shared experiences, like losing family members to the war, which could gradually lead to a less hostile relationship.
The idea of Harry Potter being the son of Rabastan Lestrange in fanfiction is quite wild. It would likely involve a lot of changes to the original plot. For example, his time at Hogwarts could be full of challenges as he tries to fit in while also dealing with the stigma of his new family. His skills in magic might develop in a different way too. He could have a natural inclination towards the Dark Arts, which he would have to struggle with. And the way the story would handle his relationship with Voldemort would be very different, perhaps even more complex.
The relationship might start with a lot of suspicion. Harry would be constantly on guard around Rabastan, and Rabastan would be wary of Harry's intentions. However, as they are forced to live together in this fanfiction scenario, they might discover each other's hobbies and interests. For example, they could both be interested in a particular type of magic or in the history of certain magical artifacts. This shared interest could be the starting point of a thawing of their relationship, leading to a deeper connection over time.
At first, it might be full of tension. Harry may be hesitant and Rabastan could be guarded. But as they start to spend more time together, they gradually begin to understand each other. Maybe they share a love for a particular type of magic that serves as a common ground.
A major theme is the exploration of his character's complexity. Instead of just being a villain, fanfictions try to show his different sides. His past traumas or the reasons he got involved with the Death Eaters in the first place. There's also the theme of survival in a post - war wizarding world, where he has to deal with the consequences of his actions and find a way to exist.
The theme of secrecy and hidden knowledge is prevalent too. Rabastan might know secrets about the Death Eaters or the wizarding world in general. Fanfictions play with this idea, showing Harry or other characters trying to uncover these secrets from Rabastan. It creates a sense of mystery and suspense throughout the story, making it engaging for the readers.
A plot might revolve around the wizarding community's reaction to Harry's new identity. Some might fear that he has the same dark tendencies as the Lestrange family. This could lead to Harry being ostracized at Hogwarts. Meanwhile, he might start to notice some strange powers or abilities within himself that he can't explain. He then tries to find out if these are related to his Lestrange heritage. Along the way, he forms new alliances with some unlikely characters who are also interested in the secrets of his family.
One possible plot could be that it's an alternate universe where the war ended differently. Harry, in his quest for peace and to end the cycle of hatred, decides to marry Rabastan Lestrange as a political move. He hopes to reform the pure - blood supremacist ideas within the Lestrange family. They might start off as strangers, but gradually learn about each other's pasts and find common ground in their losses. Harry could use his influence to bring Rabastan into the light side, and together they could work towards rebuilding the wizarding world in a more inclusive way.
Rabastan Lestrange is a rather dark and complex character in the Harry Potter universe. In fanfic, he can be explored in various ways. He was a Death Eater, which means his actions were often cruel and in line with Voldemort's evil plans. Some fanfics might focus on his time in Azkaban and how that changed him, or they could explore his relationships within the Death Eater ranks, such as with his brother Rodolphus. His loyalty to Voldemort is also a key aspect that could be delved into in fanfic.