Well, 'senku x tsukasa fanfic' like 'The Path of Understanding' is really good. It starts with their initial clashes and then gradually develops into a story of mutual respect. 'Shared Visions' is also great as it imagines a scenario where they both have to combine their skills for a common goal. And 'Hidden Depths' reveals the more complex aspects of their relationship through various events in the story.
First, study the characters of Senku and Tsukasa. Know their personalities, goals, and what makes them tick. Then, come up with an interesting plot. It could be something like them going on a quest together or facing a new threat. Also, focus on their relationship dynamic, whether it's a friendship, rivalry, or something in between.
Often, you'll see themes related to self - discovery. Tsukasa and Tsukushi might be on a journey to understand themselves better while being in the relationship. Also, there are fanfics that focus on the power dynamics between them, as they might have different social standings in the original story. This creates an interesting dynamic in the fan - created stories.
Love and relationship development are very common themes. Writers often explore how Tsukasa and Nasa's relationship evolves over time. Another theme could be adventure, where they go on various quests together and their relationship is tested and strengthened during these experiences.
One great 'senku x gen fanfic' could be 'The Adventure Beyond Stones'. It takes their unique relationship and puts them in a new, exciting situation where they have to work together to overcome a strange new threat in their primitive world. It's full of action and the banter between them is really well - written.
First, study their characters well. Know Senku's love for science and his logical thinking, and Gen's skills in psychology and his shrewdness. Then, come up with an interesting plot. Maybe something like they get stuck in a new, uncharted part of the stone world. Start writing, don't worry too much about grammar at first, just let the ideas flow.
Well, first, you could search on Tumblr. There are often fanfic writers who post their works there, and they might have some tsukasa x tsukushi fanfic. Also, some specific fandom forums dedicated to the series that these characters are from might be a good place. Some fans like to share their fan - made stories in those forums.
I'm not sure of the specific title, but there are some fanfics on Archive of Our Own that are really good. You can search using the tags 'tsukasa x nasa' and then look for ones with high ratings. Some of them might focus on their daily life together, like going on dates or dealing with family matters as a couple.
Some common themes could be friendship and rivalry. In the context of Tsukasa Eishi and Soma, their different cooking styles can lead to a friendly competition. They might learn from each other's techniques, which is a great theme to explore in a fanfic.