Another theme is redemption. Snape has a complex past and his relationship with Harry can be seen as a path towards some form of redemption in many fanfictions. It shows how their connection can change both of them for the better.
Love against all odds is also a frequent theme. Since their relationship is not a typical or expected one in the original story, fanfictions often explore how they can overcome the odds, including social stigma and their own personal differences to be together.
One common theme is the exploration of the power dynamic between Snape and Harry. Given Snape's position as a teacher and Harry's as a student, there's a lot to unpack there.
The theme of redemption can be quite common. Snape, being a morally ambiguous character, may seek redemption through his relationship with Harry in these vampire - themed stories. Also, the exploration of the vampire's nature, like their immortality and the way it impacts their connection with a mortal like Harry, is often seen.
The exploration of alternate timelines is a significant theme as well. In many snarry time travel fics, the characters end up in timelines that are different from what they know. This allows for creative storytelling as they have to adapt to new situations and relationships in these altered timelines.
One common theme is redemption. Severus often has a lot to atone for in the eyes of Harry, and through the hurt - comfort dynamic, he gets a chance at redemption. For example, in many fics, Severus might have made mistakes in the past, but as Harry helps him when he's hurt, Severus can start to make amends.
Love against all odds is a big theme. In the wizarding world, their relationship might be seen as inappropriate or difficult. But in these fanfictions, they overcome those obstacles. Also, self - discovery is there. Snape and Harry both learn more about themselves through their relationship in many of these stories. And of course, the theme of forgiveness plays a role as they have had a rather rocky past in the original story.
Overcoming prejudice is another theme. Snape has a rather complex and not - so - positive reputation in the original series, and Harry is a well - known figure. Their relationship goes against the norm, so they have to defend their love against the prejudice of others, including their friends and colleagues.
There's 'A Thin Line' that also explores the 'snarry' dynamic in a rather unique way. It has well - developed characters and a plot that keeps you engaged throughout. The author does a great job of building the relationship between the two characters.
Often, the theme of adventure is seen in Ralph Lemons fanfiction. He could embark on a quest to find a lost treasure or explore a mysterious place. Additionally, the theme of redemption can be there. If Ralph has made mistakes in the past, the fanfiction might show him trying to make amends and become a better person.
Another theme is self - discovery. The characters often discover new aspects of themselves through their relationship with another female character. For example, they might realize their true sexual orientation or find new strengths within themselves.
Adventure is a very popular theme. Harry Lemons goes on all sorts of exciting quests, whether it's to find a hidden treasure or to defeat a powerful enemy. Also, the theme of family, or the lack thereof in some cases, and how it affects Harry Lemons is often explored.
Since I don't encourage or promote 'lemons' fanfiction (due to its often inappropriate nature), I can't accurately list common themes. However, in general Marvel fanfiction often has themes of heroism, redemption, and the power of friendship. These are positive and more acceptable themes that are widely explored in non - inappropriate fanfiction.