There could be friends who are initially shocked. They might not have expected Ichigo and Senna to start a family so soon. But after the initial surprise, they would come around and offer their congratulations. Maybe they would even share their own experiences of having children or being around pregnant friends.
Adventure is also a common theme. They are often depicted going on quests or facing challenges together, which makes for exciting and action - packed fanfics. This allows the author to show their teamwork and how their relationship evolves during difficult situations.
One common theme is the exploration of their different worlds. Senna comes from her own realm and Ichigo from his, and fanfics often play with how they bridge the gap between these two very different existences.
One popular Senna x Ichigo fanfic is 'A Bond Beyond Worlds'. It beautifully weaves a story where Senna and Ichigo meet in a unique setting and gradually develop a deep connection. The author does a great job of exploring their personalities and how they interact with each other.
There's also 'Ichigo and Senna: A New Adventure'. In this fanfic, they embark on a journey together to save a realm. It has great action scenes and some really sweet moments between the two characters that will surely please the fans.
Kisshu and Ichigo are likely characters from a particular anime or manga series. They are the main focus in this fanfiction where the situation of pregnancy is involved.
A plot could revolve around the mystery of the pregnancy. Since it's fanfiction, it could be that there's something special about their child. Maybe the pregnancy is not a normal one, and they have to seek out wise elders or use special powers to ensure the health of Senna and the baby. Ichigo could be in a state of constant worry, but also excitement as they prepare for this new chapter in their lives.
One common theme could be the exploration of new relationships. For example, how the other characters in the story interact with fem ichigo during her pregnancy. Another theme might be the challenges she faces, like dealing with her powers while being pregnant.
Obviously, Ichigo is a central character. His female companions in the harem, like Orihime and Rukia, are likely to be common characters as well. They could be the ones who are pregnant or are involved in the events related to the pregnancies.
I'm not sure if there is such a specific fanfiction. Fanfiction can cover a wide variety of scenarios, but this particular one might be a bit rare or not in line with the general tone of the original work. You could try searching on some major fanfiction websites to see if it exists.