If it's the typical Rosalina Story related to the Mario franchise, the main character is Rosalina herself. She is a central figure in her own story, being the one with the most agency and the one around whom the plot usually revolves.
The 'Rosalina Story' might be a unique narrative. It could be about how Rosalina became such a powerful and kind figure in her world. In her story, perhaps there are details about how she learned to control the power of the stars and the Lumas. There could also be parts of the story that explore her emotions, like her love for the cosmos and her protectiveness towards the Lumas. It might also include her interactions with other species in the different galaxies she oversees.
Rosalina has a rather sad and lonely back story. She was separated from her mother at a young age. When she encountered the Luma, it became her companion. She then dedicated herself to looking after the Lumas and the Comet Observatory. She has been traveling through the universe, observing and protecting, for a long time. It's a story of growth, loneliness and great responsibility.
Rosalina is a character from the Mario franchise. She was introduced in Super Mario Galaxy. Her back story involves her being alone in space. She took on the role of protecting the Lumas, small star - like creatures. She travels in her Comet Observatory, which serves as her home and a way to journey across the galaxy.
In a possible Rosalina sad story, a major element could be a sense of powerlessness. Suppose Rosalina was in a situation where she couldn't change the bad things that were happening around her. For example, if her village was being destroyed by a natural disaster or an evil force and she couldn't do anything to stop it. Also, false accusations could be an element. If she was wrongly accused of something she didn't do and was punished for it, that would make for a sad story.
Rosalina and Waluigi's love story is quite an interesting one. They come from different backgrounds in the Mario universe. Rosalina, the celestial guardian, and Waluigi, the often - misfit character. Their love might start from a chance encounter. Maybe during a chaotic Mario Kart race where Waluigi's wild driving catches Rosalina's eye, or perhaps in a Super Mario Party where they are teamed up and discover their shared sense of humor and adventure. Their relationship could be a story of two outcasts finding love in a world full of Mushroom Kingdom heroes and villains.
The 'Roblox Rosalina sad story' could be various things. For example, Rosalina might have been betrayed by someone she trusted in the game. They could have promised to work together on a project, like building a huge castle in Roblox, but then the other person left her halfway through, leaving Rosalina feeling sad and disappointed. It could also be that she's constantly bullied by other players, which is unfortunately common in some online gaming communities, and that would definitely be a sad story.
One main element might be separation. If Luma is taken away from Rosalina, that would be a big part of the sadness. For example, by a force that Rosalina can't fight against.
I'm not sure which specific 'Rosalina sad story' you are referring to. There could be many stories about a character named Rosalina that are sad. It could be about a Rosalina who lost her loved ones, or perhaps her dreams were shattered. Without more context, it's hard to tell the exact story.