A third common theme could be redemption. John Winchester made some mistakes in the series. In M M fanfics, his relationship with a male character might be a way for him to find redemption or a new purpose. Maybe through the support and love of this other character, he starts to heal from his past traumas and become a better person. This theme adds depth to the character and the fanfic as a whole.
One common theme is friendship turning into something more. Since they are from different houses in Hogwarts, their initial interactions might be filled with suspicion or rivalry, but then develop into a deeper connection.
Rather than focusing on the potential themes in Rated M fanfics which are not appropriate to discuss, we can look at more acceptable themes in regular Shawn Mendes fanfics. For instance, his collaborations with other artists, his early days in the music business, and how he overcame challenges in his career. These are the kinds of themes that are both interesting and in line with good taste.
A prevalent theme is exploration. Since defying gravity can take characters to new heights or even different realms, it's a great opportunity for exploration. In many fanfics, characters use this ability to discover new lands, cultures, or secrets. Also, the theme of self - discovery is common. As they defy gravity, they often learn more about themselves and their capabilities.
A prevalent theme is the discovery of a new side of John. In love stories, his softer, more vulnerable side often emerges. Also, the theme of secrets is common. His love interest may have secrets related to the supernatural, and as they uncover each other's secrets, their relationship develops. For example, she might be part of a secret society that has its own way of dealing with the supernatural, and John has to navigate this new knowledge while falling in love.
One common theme is the idea of protection. John is often portrayed as a protector in these fics, shielding the reader from the dangers of the supernatural world. Another theme is the healing power of love. Their relationship is shown to help both John and the reader deal with their past traumas.
One common theme is the idea of the female character being a source of support for Sam. In many fanfics, she helps him through tough times, whether it's dealing with his past traumas or facing new threats. Another theme is the exploration of Sam's more sensitive side through his interactions with the female. It's like the female character brings out a different part of him. And often, there's a theme of a budding romantic relationship, which adds an interesting dynamic to the story.
Another theme could be darker and more dangerous adventures. These fanfics might take Ginny and Harry into more perilous situations than in the original books. For example, they could be facing more powerful and evil dark wizards, and the M rating might allow for more graphic descriptions of battles, injuries, and the psychological toll it takes on the characters. Also, there could be themes related to the exploration of Ginny's character outside of just being Harry's love interest, like her own magical abilities and how she uses them in these dangerous scenarios.
Overcoming obstacles is also a big theme. These can be external, like discrimination from the community or workplace, or internal, such as self - doubt. In many m2m gay stories, the couple has to fight against these odds to stay together and be happy.
One common theme could be friendship turning into something more. Brynjolf might start as just a comrade and then develop deeper feelings for the other male character.