The unknown. When you don't know what's going to happen next, it scares you. For example, in a story where a character is being followed but can't see who or what it is. It creates a sense of dread.
One key factor is the sense of the unknown. When readers or listeners can't predict what will happen next, it creates fear. For example, in a story where there are strange noises in an empty house, not knowing the source of those noises makes it scarier.
They are effective because they can surprise you in a very short time. There's no time for the reader to prepare. For instance, 'I heard a knock on the coffin. I'm not dead yet.' This kind of story immediately grabs your attention and makes your heart skip a beat. Also, they can be easily remembered and shared, spreading the horror quickly.
Scary super short stories are effective due to their ability to play on our primal fears. They often use common fears like the dark, being alone, or the unknown. Also, the brevity means the writer has to be very precise with their descriptions. They can't waste words on long - winded explanations, so every word is chosen to heighten the fear factor. In a short story about a haunted house, instead of describing every room, they might just focus on the one door that slowly creaks open, leaving the rest to the reader's imagination.
Their simplicity. Super tiny scary stories often cut to the chase. For example, just a single, spooky image like a hand reaching out from under a bed can be really scary without a lot of backstory.
They often rely on the unknown. Since they are short, they don't explain everything. In a short scary story like 'He heard a whisper in his ear, but no one was around', the lack of explanation about the whisper makes it scarier. Our imagination fills in the gaps, and our minds tend to imagine the worst - possible ghosts or some malevolent force.
They play on our primal fears. In just a few sentences, these stories can tap into our fears of the unknown, like the dark or things that go bump in the night. For example, a simple description of a strange noise in an empty house can be really scary. Since they are short, our imagination fills in the gaps, making it even scarier. We start imagining all sorts of terrifying things that could be happening.
Ouyang Liuzhi's super killing divine art was described as a modern martial art that could be used quickly. It integrated the essence of hundreds of martial arts techniques from ancient and modern times, and was created and designed with the help of modern scientific research. This cultivation method emphasized the integration of internal and external, focusing on cultivation and cultivating one's own internal strength. It abandoned the traditional practice mode and focused on the needs of actual combat. Although the search results did not provide specific information or evaluation about its effectiveness, it was impossible to determine whether Ouyang Liu Zhi's super killing divine art was effective.
The limited setting. Campfire stories are often set in isolated places like the woods or old cabins. This makes the reader or listener feel vulnerable, as these are places far from help. For example, if a story is set in a haunted forest, the idea of being lost among the trees with something sinister lurking adds to the fear.
In fanfiction, it could be that the Sexy Jutsu has a hidden power. Maybe it emits a certain type of chakra wave that affects the Third Hokage's senses. Since he's an older ninja, his senses might not be as sharp when it comes to dealing with such an unorthodox jutsu. So, Naruto's Sexy Jutsu can disrupt his balance and make him vulnerable to Naruto's attacks.