One idea for a Tsukushi and Tsukasa pregnant fanfiction could be that they go on a journey during the pregnancy. They might travel to a special place where they can relax and bond before the baby arrives. It could be a beach town or a quiet mountain village.
There could be a fanfiction where Tsukushi and Tsukasa are expecting a child. It might explore how they prepare for the new arrival. For example, they could be shown shopping for baby clothes and setting up a nursery. The story could also delve into their emotions, like Tsukushi's excitement and Tsukasa's nervousness about becoming parents.
Tsukasa was a high - school student before the petrification. He was very strong and athletic. He had a sister who was ill. His main motivation for his actions in the Dr Stone world often related to his desire to create a world where the strong protect the weak, which was influenced by his experiences with his sister.
His sister's illness and his athletic ability are key. His sister being ill made him question the old world, and his strength gave him confidence to change things in the new world.
A frequent theme is probably growth. Both characters might grow individually and together in the fanfiction. For example, they could learn from each other's strengths and weaknesses. Also, the theme of support is common. They support each other through tough times in the story.
Adventure - based themes are also quite common. They go on adventures together and during these adventures, their relationship blossoms. This could be in a fantasy setting, a sci - fi world, or even just in their normal day - to - day lives but with some exciting events thrown in. Their shared experiences during these adventures strengthen their bond and are often a central part of the story.
One common theme is the development of their relationship. It could start from friendship and gradually turn into something more romantic. Another theme is the support they give each other in achieving their goals. For example, if they are in an anime where they have some kind of mission or dream, they might encourage each other in fanfiction.
You can try fanfiction websites like Archive of Our Own (AO3). It has a large collection of fanfics from various fandoms, and there's a good chance you'll find some great anzai and tsukasa fanfics there.
Another theme can be personal growth. In many fanfics, both Tsukasa and Tsukushi might face difficulties that force them to grow and change. They support each other during this process, which is a great aspect of these stories. For example, Tsukasa might be shy at first but becomes more confident with Tsukushi's encouragement. Tsukushi, on the other hand, might learn to be more patient or understanding through their relationship.