Cursed fanfiction is a type of fan - created writing that often contains very strange, disturbing, or unconventional elements. It might involve combining characters from different universes in really odd ways, or putting them in situations that are completely against their normal character traits. For example, making a cute and friendly cartoon character into a villain in a very dark and twisted story.
In fanfiction, the idea of Zero and Yuki being pregnant can be explored in various ways. It might involve a complex plot where their relationship has developed to a point of starting a family. For example, it could be set in a world where they have overcome many obstacles together, and the pregnancy represents a new chapter in their lives, full of hope and new challenges.
I really don't know. There are so many manga out there. Yuki's choice could be anything from a fantasy epic to a slice-of-life story. Maybe you can look for manga-related items around Yuki to get a clue.
The origin of the cursed sword could be from an ancient and evil clan. Maybe they used dark magic to create it, and it was lost over time until Naruto discovers it by chance. For example, it could have been buried in a forgotten tomb that Naruto stumbles upon during a mission.
The cursed sword could enhance Naruto's physical strength. Since Naruto already has a lot of raw power, the sword might multiply it, making his punches and kicks even more powerful. For example, if he punches an enemy while holding the sword, it could send the enemy flying farther than normal.
I'm not sure specifically as it could be a relatively unknown or new story. It might involve a city that is under some sort of curse, perhaps with its inhabitants facing strange phenomena, like dark magic affecting their daily lives, or some sort of evil entity lurking within the city walls.
Most of these stories have a history or a backstory that is full of mystery and misfortune. For instance, the house where the cursed doll was found had a series of unexplained deaths. This backstory adds to the sense of dread. And the atmosphere in these stories is usually very dark and gloomy, creating an overall spooky feeling for the readers or listeners.
One idea could be that in the fanfiction, Zero discovers Yuki's pregnancy and is initially shocked but then becomes overjoyed. He starts to plan for their future together, like finding a safe place to live and preparing for the baby's needs.