The common themes include the growth of their relationship. Starting from their initial acquaintance in the series, fanfics show how their relationship evolves into a romantic one. Trust is another big theme. They have to trust each other not only as friends but also as lovers. And many fanfics also touch on the theme of sacrifice. They might be willing to sacrifice for each other's happiness in a more romantic - relationship - based scenario, which is an extension of the selfless friendship they had in the original anime.
Well, I know a fanfic named 'The Unspoken Bond' in the Gay Gon x Killua category. It delves into the unspoken feelings between them in a really touching way. Additionally, 'Parallel Paths' is quite interesting as it imagines their lives if they had taken different routes while still maintaining their strong connection. There are always new and amazing works popping up in this genre.
Gon in fanfiction can be very single - minded in his pursuit of goals, just like in the original. He might be a bit more naive at times, which can lead to interesting plot twists. Killua is often portrayed as having a complex emotional side. He struggles with his past as an assassin and his loyalty to Gon. His cool exterior may crack in some fanfictions, showing his true feelings.
Yes, there are likely some fanfictions out there with such a concept. Fanfiction writers often come up with creative crossovers. You can try searching on popular fanfiction websites like Archive of Our Own or Fanfiction.net.
I think Midoriya could be his best friend. Midoriya is kind - hearted and always looking to learn, which would appeal to Killua. They could bond over their shared desire to become stronger and protect others.
Often, they show a deeper level of commitment. The mpreg forces them to rely on each other more. For example, Gon might become more protective of Killua during the pregnancy.
As I mentioned before, 'lemon' implies adult content which is not suitable for discussion. So, I can't really talk about the characteristics of such fanfics.
No, it's not appropriate. Fanfiction should focus on positive aspects such as character development, new adventures, or exploring relationships in a non - explicit way. Sexualizing a character in fanfiction goes against the spirit of most fandoms which are often family - friendly or at least should be respectful of all ages.