The world - building. The MLP world is usually so bright and full of hope. When a fanfic takes this world and adds a sad element to it, like a natural disaster hitting Ponyville or a dark force taking over Equestria, it creates a strong contrast that makes the sadness even more impactful. It's like seeing your happy childhood place suddenly in ruins, and it really tugs at the heartstrings.
The characters. In MLP, we get attached to these colorful and unique ponies. When something bad happens to them in a sad fanfic, like Twilight Sparkle losing her magic or Pinkie Pie losing her sense of humor, it hits hard because we care about them.
The strong emotional connection we have with the characters. We've seen Naruto grow up, so when a fanfic puts him through a sad situation like losing his dream or a loved one, it hits hard.
The emotional depth. Readers like to feel a strong emotion, and sadness is a very powerful one. It can make us sympathize with the characters more deeply.
The contrast. For example, if there are bright colors in most of the comic but suddenly a dark scene appears for the sad part. It catches your eye.
The element of sadness in nosleep stories is impactful because it tugs at our heartstrings. It makes us feel empathy for the characters. For example, when a character loses a loved one in a nosleep story, we can relate to the pain of loss in our own lives.
The sense of loss. In a real sad story, like when someone loses a loved one, it's that feeling of having something precious taken away that makes it impactful.
They are impactful because they are a window into someone else's soul - pain and all. When an author like Paul Kalanithi in 'When Breath Becomes Air' writes about his terminal illness, it makes us confront our own mortality. These stories also show the strength of the human spirit in the face of adversity, which is both inspiring and heart - wrenching.
The fact that it's real. When we know it actually happened to someone or something, it hits closer to home. For example, the story of a child being bullied at school. We know there are real kids out there going through that pain.
A true sad story often involves the loss of something precious, like a person's health, a relationship, or a beloved pet. When we hear about these losses, we can put ourselves in the shoes of those who are suffering. For example, if a story is about a person losing their best friend in a car accident, we think about our own friends and how devastated we would be. Also, the details in a true sad story add to its impact. The more vividly the pain and the situation are described, the more it affects us.
A poor sad story often has a sense of helplessness. Take the story of a starving child. The child can't do much to change their situation, and neither can those around them sometimes. This powerlessness makes the story impactful. Also, the contrast between what could be and what is in the story. A person who should be happy but is sad due to circumstances is very moving.
One factor is the sense of reality. Since it's true, it hits closer to home. For example, when we hear about a real person losing their job and struggling to support their family, we know that such things can actually happen to us or someone we know. And the sadness makes us feel empathy. We can put ourselves in their shoes and feel their pain. It makes us more aware of the hardships in life.