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.
I'm not sure specifically what 'Cap deage' means. It could be a very specific term, a misspelling, or something relatively unknown. It might be a proper name, a local term in a certain area or a very niche concept.
I don't have enough information to say exactly who Cap'n Kathy is. She could be an original character created by the fan fiction writer. Maybe she's a pirate - the 'cap'n' part could suggest that - who has some connection to the wizarding world of Harry Potter.
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.
A cartoon shower cap is known for its eye-catching appearance. It can be in various shapes like animal heads or funny objects. Also, it's usually elasticized to fit different head sizes snugly.
The cap man and monkey story is an interesting one. There was this cap man who was traveling around selling his caps. He reached a place near a forest and decided to take a rest under a tree. While he was sleeping, the monkeys in the tree noticed the caps. They climbed down, grabbed the caps, and went back up the tree. When the man woke up, he was confused at first, then saw the monkeys with his caps. He was worried as those caps were his livelihood. But then he remembered that monkeys often mimic human actions. So he took off his own cap and tossed it. The monkeys, being the imitators they are, did the same with the caps they had taken, and the cap man got his caps back.