One key element could be loss. Maybe Kaguya loses someone she loves dearly, like a close friend or a family member. Another might be isolation. If she's different from those around her, she could be isolated and that would contribute to the sadness of the story.
Well, in the Medusa sad story, the initial situation where she was a normal, beautiful woman is a key element. Then comes the event that led to her curse - Poseidon's actions in Athena's temple and Athena's unjust punishment. Her new form as a Gorgon with the power to turn people to stone made her an outcast. And her final encounter with Perseus, where she was beheaded, is also a very important part of this sad story that reflects the harshness of the Greek mythological world.
Since I'm not familiar with this particular'mr freeze sad story', I can only guess. It could be that Mr. Freeze has some sort of family issue. For example, his family might have been affected by a disease or a disaster, and he couldn't do anything to save them. This feeling of helplessness and the loss of his family could be a major part of his sad story. Another element could be his own identity. Maybe he was forced to become someone he didn't want to be because of the circumstances, and this internal conflict adds to his sadness.
One key element might be the dogs' emotions of sadness. Another could be the reasons behind their sadness, such as being mistreated or lonely.
I don't have enough details about this story. But it could be that betrayal is a key element. Maybe one of them was betrayed by the other or by other characters in their story.
The setting could be an important element too. If the story is set in a busy city where everything is fast - paced and he has to constantly struggle to keep up because of his eyesight, it can make for a sad story. Imagine him trying to cross the street but being unable to tell when it's safe due to his nearsightedness, and people shouting at him. His internal struggle to fit in and be normal in such an environment is a key part of what could make the 'Mr Magoo Sad Story' sad.
There are several key elements in the real story of Princess Kaguya. Firstly, her discovery in the bamboo which is a very unique start to the story. Then, the family that took her in and raised her, their relationship was very important. The influx of suitors due to her beauty was a major part of the plot. The tasks she gave to the suitors, which were often related to the supernatural, were crucial elements. And most importantly, her celestial origin and her return to the moon at the end of the story which gives the story a sense of mystery and otherworldliness.
Well, first of all, the discovery of Princess Kaguya in the bamboo is crucial as it sets the whole story in motion. Her beauty, which is almost otherworldly, is another key element. It makes the suitors flock to her. The tasks she sets for the suitors are also key. They not only show her disinterest in earthly marriage but also add an element of adventure to the story. And finally, her return to the moon, which is a very poignant part of the story, representing the end of her time on earth and the loss for those who loved her.
Sure. One key point is the murdered children. They are the core of the sad story as their souls possess the animatronics. Another is the mystery surrounding the murders and the pizzeria's attempts to cover it up. And also, the night guards who have to face these haunted animatronics every night, not really understanding the full horror of what they are dealing with.
One possible element could be unrequited love. Maybe the Valkyrie fell in love with a mortal, but due to her divine nature and the rules of the cosmos, they couldn't be together.
Maybe a rocket explosion during launch is part of it.