Well, Kurama's sad story in Naruto Shippuden is complex. He was feared by the villagers in the Hidden Leaf because of his power. When he was sealed into Naruto, he was angry and tried to take over Naruto's body multiple times. His past was filled with being hunted and then trapped. It wasn't until he started to understand Naruto's will and dreams that he began to change. Naruto's unwavering determination and kindness towards him slowly melted his cold heart.
One sad story in Naruto is about Sasuke. His entire clan was massacred when he was young. He had to live with this trauma and the thirst for revenge. He left his friends in Konoha, like Naruto who considered him a brother, to seek power from Orochimaru. This led to a long separation and many battles between them.
Communication is key. If Naruto finally realizes Hinata's love and they sit down and talk about their feelings, it could start to mend things. Naruto could share his own insecurities that made him blind to her love before.
To write a really sad story, start with a character facing a profound loss or heartbreak. Build up the emotions gradually, describe the details of their pain, and show how it affects their life.
A Naruto fanfiction can be sad when it delves into the sacrifices Naruto has to make. He gives up so much of his personal life and relationships for the sake of the village and his friends. If a story highlights how he loses his close friends, like Sasuke in some darker interpretations, it can be extremely sad. Additionally, if it shows Naruto being misunderstood by the people he's trying to protect, that also adds a layer of sadness. For instance, if the villagers still don't trust him despite all his efforts, it can be a very tragic situation for Naruto.
One popular 'Naruto and Sakura sad love story fanfiction' is 'The Unrequited Love'. In this story, Sakura realizes her love for Naruto too late. Naruto has already moved on, having been hurt too many times by her previous rejections. The story is filled with Sakura's regret and Naruto's bittersweet acceptance of their new relationship dynamic.
One main aspect is his forced imprisonment. He was sealed into Naruto, losing his freedom. Another is the hatred he faced from humans. Because of his power, people were scared of him. Also, his initial relationship with Naruto was full of conflict as he tried to break free from the seal by overpowering Naruto.
The theme of time and change is also prevalent. As time passes, their feelings might change or they might change as people. Naruto could become more distant because of his experiences, or Sakura could become more hardened. This change can lead to a sad love story where the love they once had or could have had is now lost. For instance, Naruto might go through a traumatic event on a mission that changes his view on love and relationships, making it difficult for him and Sakura to be together.
My '5 words sad story' is 'Hope, gone, dark, fear, end'. A person had hope, perhaps for a better future or for a relationship. But then it was gone. All they could see was darkness. Fear crept in and they felt like it was the end of everything, as if there was no way out of their misery.
Once upon a time, there was a little dog. It was abandoned by its owner just because it got sick. The dog waited at the corner where it was left every day, hoping its owner would come back. But as days passed, it became weaker and weaker. Eventually, it died alone, sad and unloved.