Change. The world has changed a great deal since his early days. He has difficulty adapting to some of these changes, and this struggle with the passage of time and the transformation of the world is a key element in his sad story.
Well, Zhongli's sad story might involve his sense of detachment from the present world. He used to be a very powerful and involved figure in the past, but now in the current era, he often feels like an outsider. He has all this knowledge and history within him, yet sometimes struggles to fully connect with the modern ways and values, which can be a lonely and sad state.
One key element is his past in a rough environment. Growing up in a place with drugs and a wild street life left a mark on him. His music shows that he has seen the darker side of life early on.
The key element is the massacre of his family. It's the starting point of his sadness. Another is his separation from his friends in Konoha. And his pursuit of revenge which consumed him.
The key element is the pressure of fame. Since he was young, he had to deal with the demands of being a superstar. Another element is his relationship problems, like with Selena Gomez. It was hard for him to handle the breakups publicly.
The key elements include his difficult family background. His mother's substance abuse problems led to an unstable home. The fact that he was a white rapper in a mostly black - dominated genre also brought him a lot of trouble. He had to endure discrimination and prejudice not only in society but also in the music industry. His own internal battles with depression and self - worth, which were a result of his tough upbringing, are also important aspects of his sad life story.
One of the key elements is the sequence of tragic events. First, there was the accident during the mission where Obito was severely injured. Then, Rin's death which was a huge blow. Another important element is his relationship with Kakashi. The misunderstanding between them regarding Rin's death was a major factor. Also, his own sense of being a failure due to his physical state contributed to his downward spiral. All these elements combined to create his very sad story.
Since I don't know the exact yoona sad story, if it's a story about loss, the key element could be the thing or person that was lost. For example, if she lost a dear friend, that friendship and the memories associated with it would be a key element.
One key element is unrequited love. For example, Dracula might love someone he can't have, like a human who is repulsed by his vampiric nature. Another element is loneliness. Dracula is often alone in his castle, surrounded by his dark existence with no real companionship. Also, the loss of his former self. Before becoming a vampire, he might have been a different person with hopes and dreams, and now those are all gone.
One key element is the high hopes or big dreams of the specialist. For example, if a scientist specialist aims to find a cure for a deadly disease but fails, it creates sadness. Another element is the personal connection. If a music specialist has a deep emotional bond with a particular instrument or piece of music that gets damaged or lost, it leads to sadness. Also, external factors like lack of resources or support can be important. If a sports specialist doesn't have the right facilities to train athletes and they lose important competitions, it can be a sad story.
The main character's loss is a key element. For example, in the story of Lily and her dog, the loss of her beloved pet was the central cause of her sadness.