One common theme is time - related powers. Since it's about watches, often the watches in the fanfiction have the ability to manipulate time in some way, like slowing it down or allowing time travel.
Friendship is a major theme. The Marauders were a tight - knit group, and fanfictions often explore their deep bonds, like how they support each other through thick and thin.
One common theme is self - reflection. Oliver often reflects on his own journey as a hero while watching the events in Arrow. Another theme is the passing of the torch. He might be watching new heroes rise and thinking about how they will carry on the legacy he started. And of course, there's the theme of redemption. He may see others going through similar struggles he had and hope they find redemption as he did.
A third theme could be admiration. Sometimes, Seto's watching of Yugi can turn into a form of admiration, especially when Yugi shows great courage or intelligence during duels. In some fanfictions, this admiration might even border on a different kind of feeling, like a deep friendship or a grudging admiration that Seto doesn't want to admit to at first.
One common theme is the friendship between Arthur and Merlin. It's often explored more deeply, like how they support each other through tough times. Another theme is Merlin's struggle with his magic, whether it's hiding it or using it for the good of Camelot. And of course, the theme of loyalty to Camelot and its ideals is also prevalent.
A common theme is family. Since Summer is Ruby's mother, there's a strong focus on the family bond and how it influences Ruby's actions and decisions. It also often explores the idea of legacy, as Summer was a great Huntress and Ruby is following in her footsteps.
One common theme is the relationship between the citizens of Paris and Ladybug. In many fanfictions, the people of Paris look up to her as a hero and she becomes a symbol of hope for the city. Another theme is the mystery of the Miraculous. Writers often explore how the Miraculous came to be in Paris and what their true powers are.
One common theme is friendship. Sonic and his friends' relationships are often explored in depth, like how they support each other during tough times. Another theme is adventure. They go on various quests, whether it's to save the world or find a hidden treasure. Power - up is also a theme, like Sonic getting new abilities to fight stronger enemies.
Love and relationships are common themes as well. Whether it's her relationship with her family members in a more loving way or a romantic relationship with a new character. These stories can show how love can change her perspective and actions, and how she navigates through different types of relationships in the world of One Piece.
A frequent theme is culture clash. Ben comes from a very different world than the One Piece universe. So, in these fanfictions, there are often parts where Ben is trying to understand the pirate code, the concept of bounties, and the different races in One Piece. Also, adventure is a big theme. The two series are both about going on exciting journeys, and in the fanfictions, they often combine these adventures, like exploring new islands together or facing new and unknown threats.
Another theme is the struggle of the pregnant character. In a world full of pirates, marines, and various dangers, being pregnant is not easy. The character may have to deal with physical limitations while still trying to contribute to the crew or their own goals, and this internal and external struggle is often explored in these fanfictions.