One possible fanfiction could be about how Kono and Adam first find out about the pregnancy. Maybe they were both in shock at first, but then quickly filled with joy. They could start making plans for the future, like preparing a nursery and thinking about baby names.
It's also possible that Hana is related to one of Naruto's friends. Maybe she's Kiba's sister or something. And because of her connection to Naruto's friend, Naruto feels responsible for her safety. So when she's in trouble, Naruto steps in to save her without hesitation.
Their relationship would likely become more protective. Adam would be constantly worried about Kono's well - being and that of the baby. He might be more overprotective than usual, which could sometimes cause friction between them as Kono is used to being independent. For example, he might not want her to go on dangerous missions.
Sorry, I'm not aware of any such comic book and fictional character creator from Saku. You could try checking specialized comic book forums or databases for that information.
One emotional moment could be when Kono is injured during a mission and her friends fear for her life. They gather around her in the hospital, and the worry on their faces shows how much she means to them.
I've read a few Steve and Kono pregnant fanfictions. In one, the pregnancy was a surprise and it led to a whole new adventure for them. It showed how their relationship deepened as they prepared for parenthood. Another one was more about the challenges they faced, like Kono's health issues during the pregnancy and how Steve supported her through it all.
Hana could be an original character created for this fanfiction. Maybe she is a new ninja in the village who Naruto falls for, but she has a hidden agenda that ends up breaking his heart.
I'm not sure specifically as it could be various things. It might be a fanfiction related to the time when koi (carp) swim and cherry blossoms bloom, with some 'doki' (a Japanese onomatopoeia often associated with a heart - thumping feeling).