A fanfic could also focus on a more emotional side. Maybe Luma gets lost, and Rosalina has to search everywhere for it. This would show her deep attachment to Luma and how she would do anything to get it back. During the search, she could reminisce about all the times they spent together, from stargazing to playing among the stars.
Another idea for the fanfic could be a coming - of - age story for Luma. Rosalina could be like a mentor, guiding Luma as it learns about the universe, about kindness, and about how to use its powers for good. There could be a series of lessons and experiences that Luma goes through, with Rosalina always by its side, providing support and wisdom.
Luma's character can be developed by highlighting its curiosity. It's new to the universe in a sense, so it can constantly be asking questions, exploring new things. You can also show its loyalty to Rosalina, like how it always stays close to her and follows her instructions without hesitation. As the story progresses, Luma could grow in confidence, starting from a bit of a timid character to one that can face challenges on its own, with Rosalina's teachings in mind.
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.
One possible plot could be that Luigi gets lost in space and Rosalina finds him. She takes him under her wing and shows him the wonders of the cosmos. As they travel among the stars, they start to understand each other better and form a bond.
I'm not sure specifically which 'luma and rosalina sad story' you mean. There could be various fan - made or game - related stories. Maybe it's about Luma getting separated from Rosalina in some dangerous situation in the game's universe, which would be really sad for Rosalina who has a deep bond with Luma.
It could be a story where Rosalina and Peach discover a magical lemon grove. In this grove, they find that the lemons have special powers. They then have to work together to protect these lemons from an evil force that wants to use their power for bad. Their relationship grows as they face challenges side by side.
Well, one possible plot could be that Naruto somehow gets transported to the Mario universe where he meets Rosalina. They could start off as strangers, but then Naruto's determination and kindness draw Rosalina's interest. Maybe they team up to face a common threat that is endangering both the ninja world and the Mario universe.
One possible plot could be that Mario saves Rosalina from a dangerous situation in space. In the heat of the moment, after the rescue, they share a kiss. It could be a sign of their deepening connection and gratitude.
Well, in such a fanfiction, Tatanga might be after Rosalina for her unique powers. Maybe he wants to use her connection to the stars to gain control over the cosmos. He could hold her captive in his dark and gloomy lair on his home planet. Rosalina, being a strong character, would try to resist and find a way to escape, perhaps using her Lumas to send out a distress signal to Mario or Luigi who would then come to her rescue.
There are many possibilities. Their relationship could be a symbol of unity between different species or groups. It could inspire other characters in the Ben 10 universe to be more open - minded. And in terms of story development, it could lead to new power - ups for Ben, as his connection with Luma might unlock some hidden potential in his Omnitrix.
Another theme might be friendship or alliance. Since they are from different universes, they could form an unexpected friendship or alliance to face a common threat. This could involve Naruto's ninja skills and Rosalina's unique powers working together. For example, Naruto's shadow clone jutsu combined with Rosalina's ability to control stars in some creative way to defeat an enemy. Also, there could be themes of discovery, as they learn about each other's cultures, powers, and backstories in the fanfic.