I'm not sure if there is specific non - adult fanfiction on this topic. You could try searching on fanfiction - dedicated websites like Archive of Our Own or FanFiction.net. Just be sure to filter for appropriate content ratings.
Fanfiction.net is also a place to look. However, the search function might not be as refined as AO3, but it still has a lot of fan - created content. Just search for 'kobato x fujimoto' in the search bar, and browse through the results.
One great kobato x fujimoto fanfic could be one where they go on an adventure together in a magical world. It could show how their relationship develops in this new and exciting setting.
One key element could be the emotional journey. For example, how Kobato and Fujimoto deal with the news of the pregnancy, their fears, hopes, and joys. This can be explored in a very family - friendly way.
The appeal of the old Ninja Turtle cartoon lay in several factors. Firstly, the unique personalities of the turtles made them very likable. Secondly, the action scenes were thrilling and kept viewers on the edge of their seats. Finally, the humor and teamwork among the turtles added to the entertainment value.
Signed comics are often more valuable because they have the signature of the creator or a notable figure. Unsigned ones are just the regular versions without that special touch.