Perhaps Celly had a pet that she loved very much. One day, the pet ran away and never came back. Celly searched everywhere for it, asked the neighbors, put up posters, but still no sign of the pet. She missed the pet's company, the way it would greet her when she came home, and this made her really sad.
Well, since it says 'Celly ru sad story', Celly is most likely the main character. Maybe she's a young girl who has to face a lot of hardships in her life.
One possible plot could be that two animals from different tribes fall in love. For example, a raccoon and a eagle. They face so many difficulties because their tribes have old rivalries. They try to keep their love a secret but are eventually found out. Their families and tribes force them apart. They are left with broken hearts, and the raccoon always looks up at the sky hoping to see the eagle fly by, while the eagle perches on high rocks looking down sadly at the raccoon's territory.
Maybe it's about a haunted house where some tragic events occurred in the past, like a family being torn apart by illness or misfortune, and the lingering sorrow still fills the house.
The plot could be that Silver gets trapped in a time loop where he keeps seeing Blaze die over and over again. Each time he tries to save her, but fails. His love for her is strong, but he's powerless against this cruel fate, and his despair grows with each loop.
The puppy could be lost. It wanders around the streets, not knowing where to go. Every time it sees a person, it hopes that it's its owner coming to find it. But no one stops to help. It gets hungrier and thirstier as days pass.
A sad plot could be that an MLP loses its home. Maybe due to a natural disaster like a huge flood or a wildfire. The pony has to flee, leaving behind all its memories and possessions. It then has to struggle to find a new place to live, facing rejection from other pony communities because they are afraid of overcrowding or don't trust the new pony. The pony feels lost, alone and sad, constantly reminiscing about its old home and the happy times it had there.
Perhaps the mime is in love with someone who doesn't notice him. He follows her around in his mime world, always a few steps behind. His movements are gentle and longing, like when he mimes opening a door for her but she just walks through without seeing him. His face shows a constant state of heartbreak as he tries to get her attention but fails every time.
Well, it could be about a player who worked really hard on building their dream virtual house in Roblox but then lost it all due to a glitch. They might have spent days gathering resources and designing every little detail. It's really sad when all that effort goes to waste just like that.
Imagine a snake that lived in a peaceful meadow. Then, a large construction project started there. Bulldozers and machines destroyed the snake's home. The snake was injured during the process. It tried to find a new place to live but was constantly chased away by other animals. With no place to go and no one to help, the snake's life became a series of sad and desperate struggles for survival.
The cyborg might be in love with a human, but the human is repulsed by its non - human parts. So it has to watch the person it loves from afar, heartbroken.