The theme of loyalty also runs strong. Sirius is fiercely loyal to James, Harry's father, and this loyalty extends to Harry. He'll do anything to keep Harry out of harm's way, whether it's facing dark wizards or going against the Ministry of Magic if he has to.
Another theme is redemption. Sirius may feel he has a lot to make up for, especially considering his past mistakes. By being protective of Harry, he's sort of redeeming himself. For example, in many fanfics, he tries to prevent Harry from making the same mistakes he did when he was younger.
There's also 'Sirius's Oath'. It shows Sirius making an unbreakable vow, in a way, to always protect Harry. It delves into their relationship, with Sirius teaching Harry things he never learned at Hogwarts, all while shielding him from the dark forces that are after him. It's really interesting as it also shows how Sirius's protectiveness affects Harry's growth as a wizard.
One common theme is family. Since Sirius is now Harry's dad, the fanfics often focus on building a strong family unit. Another theme could be redemption, as Sirius might have more of a chance to make up for his past mistakes. Also, there's the theme of protection, as Sirius would be even more determined to keep Harry safe from Voldemort.
One common theme is family. These fanfics often focus on how Sirius and Remus create a loving and stable family environment for Harry, something he lacked at the Dursleys. Another theme is friendship. Since Sirius and Remus were friends with Harry's parents, their relationship with Harry is also about keeping the memory of his parents alive through their friendship.
Another theme is family. Since Harry lost his parents, Sirius becomes like a surrogate father figure. Fanfics explore how Sirius fills that void in Harry's life, like in some where they celebrate Christmas together in a very family - like way. It gives Harry the sense of a real family that he's been longing for.
Another theme is the idea of hidden alliances. In many of these fanfics, the Slytherins form a secret group to protect Hermione. This adds an element of mystery and intrigue as they work behind the scenes to keep her safe from threats, both inside and outside Hogwarts.
One common theme is trust. Clint's protectiveness shows his deep trust in Tony's importance to the team and as a friend. For example, in many fanfics, Clint will trust Tony's instincts in a battle situation even when others don't.
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.
A common theme is the strengthening of their relationships. Through these private lessons, they become closer, almost like a family. Another theme is the transfer of knowledge, especially knowledge that Harry might not get in Hogwarts. For example, Sirius could teach him about the unwritten rules of the wizarding world, and Remus could teach him more about magical creatures in a more in - depth way.
Well, friendship is a huge theme. The fanfics usually show how their friendship is so strong that Asriel feels the need to protect Chara. Also, the theme of redemption can be there. Maybe Chara has made some mistakes in the past, and Asriel's protection is a way of helping Chara find redemption. It could be like he's shielding Chara from the judgment of others in the Underground. Additionally, the theme of family - like bond can be present. Even if they're not related by blood, they act like family, and Asriel takes on the role of the protector in that family - like relationship.
One common theme is loyalty. The protectors in these fanfics are extremely loyal to Hakyeon and will do anything to keep him safe. For example, they might face dangerous situations or powerful enemies just for Hakyeon.