Often, the theme of redemption might play a role. Crouch has made some mistakes in his past, and in a romantic relationship with Harry, he could be on a path of redemption. Also, the theme of love across differences. Harry is young and full of hope, while Crouch is more jaded. Their love could bridge that gap between youth and experience. And there might be a theme of secrecy as well, considering their relationship would be quite controversial in the wizarding community.
There are some fan fictions out there, but they might be a bit rare as it's not a very common pairing. You could try searching on fan - fiction - specific websites like Archive of Our Own. They have a large collection of various fan fictions and you might be able to find something related to Harry and Crouch's relationship in the fan - made stories there.
One possible plotline could be that Barry Crouch Jr., while undercover or having a moment of redemption, saves Harry from a dangerous situation like a Death Eater attack. After that, they start to interact more, and a romantic spark begins to form as they realize they have more in common than they thought.
One common theme is the idea of overcoming differences. Since they may be from different backgrounds or houses in the wizarding world, the fan fictions often focus on how they bridge those gaps. For example, in many stories, Harry's Gryffindor bravery and Theodore's more reserved nature from his own house are things they have to work through.
Love against all odds is also a frequent theme. There are often external forces like dark magic, or the disapproval of the wizarding community that try to keep Harry and the creature apart. But their love prevails, showing the power of love in a rather fantastical setting. This makes the stories very engaging and full of emotional highs and lows.
Another theme is the exploration of identity. Characters might struggle with their dual identities as Jews and wizards. For example, a character may face discrimination or misunderstanding because of their different cultural and religious background within the predominantly non - Jewish wizarding community. This can lead to stories about self - discovery and acceptance.
In 'Percy Weasley and Harry Romance Fan Fiction', a common theme is the journey of their relationship. This can include the initial awkwardness or misunderstanding between them due to their different natures. Another theme is the support they give each other in the face of various challenges in the wizarding world. For example, Percy might use his knowledge of the Ministry to help Harry in his battles against dark forces, and Harry might give Percy the courage to break free from some of the more rigid Ministry - related constraints. Also, the theme of secrecy and how they handle their relationship in a world that might not be fully accepting of it is often explored.
One popular theme is the friends - to - lovers trope. They start as best friends, then gradually realize their deeper feelings for each other. Another theme could be the struggle with their own identities within the wizarding world while being in a relationship. For example, how they deal with the reactions of their friends like Hermione. Also, there might be themes around adventures they go on together while their relationship is budding, like exploring new parts of Hogwarts or facing new magical creatures as a couple.
One common theme is redemption. Severus, who had a somewhat villainous image in parts of the original story, gets a chance to redeem himself through rescuing Harry and then developing a romantic relationship. Another theme is the breaking of barriers. They come from different backgrounds and have had a strained relationship in the original, so in these fan fictions, they break those barriers of enmity and class differences. Also, the theme of self - discovery often appears as they both learn more about themselves through this new relationship.
Often, there might be themes related to power imbalances in these types of fan fictions. In the context of Harry Potter, magic can create situations where one character has more power over another, which can be misused in a relationship. Also, themes of redemption for the abuser can be present. This is where the abuser realizes their wrongdoings and tries to make amends, similar to how some characters in the original series have moments of redemption. However, it's important to note that these themes should be explored in a way that doesn't glorify abuse.
One common theme is the struggle for acceptance. Harry, being in Slytherin where he might not be initially welcomed, has to fight for his place. And the abuse he faces adds to that struggle. Another theme is redemption. The romantic relationship can be a source of redemption for both Harry and the other character involved. For example, the Slytherin love interest might have their own issues and together they find a way to heal.