One common element is a sense of time passing, like the fortnight. It builds up the suspense gradually. Another is the setting, often an isolated or spooky place such as an old house or a dark forest. Also, strange noises are common, like creaking floors or whispering voices that add to the scariness.
Here's one. In a fortnight of staying at a haunted inn, a traveler noticed that every midnight, a cold wind would start blowing through his room. He saw a face in the window that seemed to be from another era. As the fortnight progressed, things got worse. Objects in the room started moving on their own. He was terrified but couldn't leave until the fortnight was over.
I don't know who wrote the 'fortnight story' as there isn't enough information given. It could be an unknown author or it might be a story within a specific collection written by a particular writer.
The 'fortnight story' could be a wide variety of things. Since 'fortnight' is a time frame of two weeks, it might be a story centered around a series of events that occur during those two weeks. For example, it could be about a person who has a goal to achieve in a fortnight, and the story details their efforts, the obstacles they face, and whether they succeed or not. It could also be a story about a group of people whose lives intersect during this two - week period, leading to various dramas, comedies, or adventures.
Another theme is exploration. In some 'Naruto Fortnight' fanfictions, the fortnight might mark the start of a journey into uncharted territories. Naruto could be exploring new lands, cultures, or even new forms of chakra during this time. This theme adds an element of adventure to the stories.
A popular one is 'Naruto and the Fortnight Trials'. This fanfiction focuses on Naruto having to go through a series of trials that last a fortnight. It delves deep into Naruto's growth as a character as he overcomes each trial. The author has done a great job of portraying Naruto's determination and how he uses his ninja skills to get through the fortnight of trials.
The unknown. When there are things that are not fully explained or shown, it scares people. For example, in a haunted house story, if you just hear strange noises but don't see the source clearly, it creates a sense of fear. You start imagining all sorts of terrifying things.
What makes a scary story truly scary is the element of the unknown. When there are things that are left to the imagination, it scares people more. For example, in a story where there's a strange noise in the attic but you don't know what's causing it. It could be anything, and that uncertainty is terrifying.
Often, the unknown makes a story truly scary. For example, in many of these stories, there are unexplained noises or movements. When you don't know what's causing something, it scares you more. Like in a haunted house story, if you just hear a creaking sound but don't see what's making it, your mind starts to imagine all sorts of terrifying things.