Yes, there are quite a few. You can start by looking on popular fanfiction websites. Some might focus on their relationship dynamics in the context of the original story's world, exploring how their different personalities interact.
Well, it could be a number of things. Maybe she faces some challenges, has a major life change, or discovers a hidden truth. But without reading the specific novel, it's hard to say for sure.
Another option is Tumblr. There are often fanfic writers who post their works there, and you might be able to find some Himeno x Denji fanfiction by searching relevant tags or following the right blogs.
I haven't read this specific fanfiction, but usually, in fanfictions about Himeno and Hayate kissing in Pretear, it might explore their relationship deeper. It could be a sweet moment of their romantic connection, perhaps a turning point in their story where their feelings are more openly expressed.
There were a few novels related to the chainsaw man that could be recommended. One of them was " Chainsaw Man: I Have Two Divine Powers ", written by Stupid War-chan. The story was about the protagonist, Kotone Shallow Feather, who had transmigrated to the world of the chainsaw people and obtained the power of the Divine Eyes. The other was Chainsaw Man: I Have Two Demons, written by Thirteenth Wang.
" Saw 9 " was the latest movie in the Saw series, directed by Darren Lyn Bosman. The film continued the plot of the previous film, continuing to tell the story of Jigsaw's trial of those who did not value life. There was no specific information about Saw 10 at the moment.