In some fanfictions, Marinette could be dying due to a curse placed on her. This curse might be related to her identity as the Guardian of the Miraculous. As she weakens, her friends and family start to notice the changes in her. They try to support her, but the curse is too powerful. Tikki, her kwami, might also be unable to do much as Marinette's health deteriorates.
One scenario could be Marinette sacrificing herself to save Paris from a powerful akuma. She might use her Ladybug powers in a way that drains her life force but stops the villain. Another could be that she's poisoned by an enemy who targets her as Ladybug and slowly succumbs to the toxin, with Chat Noir desperately trying to find a cure.
Perhaps Marinette is caught in a time - loop where she keeps reliving a day where she's doomed to die. Each time she tries to change the outcome, something goes wrong. As she gets closer to her final death, she starts to come to terms with her fate, but her loved ones are left devastated, especially Adrien, who has no idea that Marinette is Ladybug and is about to lose her.
In some fanfictions, Marinette might fight against an alternate version of herself. This could be a version that has been corrupted or turned evil. It would be a really intense battle as she has to face someone with the same skills and knowledge as her. She'd have to dig deep and find the strength within herself to overcome this internal conflict.
Another possibility is that they are on a mission as Ladybug and Chat Noir. They get separated from the villain and find themselves in a secluded alley. In that moment of relief and closeness, they give in to their feelings and kiss. This kiss would be a bit more rushed and urgent compared to the one at the dance, but still full of love.
For Adrien, if he discovers Marinette's situation, it would be a huge shock. He has feelings for her that he might not have fully realized yet. Her dying would make him re - evaluate his life and his relationship with her. Her parents would be in a state of despair. They are loving and protective of Marinette, and to see their daughter dying would shatter their world. They would do anything to save her, even if it means making deals with dangerous people.
In different Miraculous fanfiction, Marinette can be portrayed in various exciting ways. Sometimes she might have new powers or face different challenges compared to the original series. For example, in some fanfics, she could form unique partnerships with other Miraculous holders that we don't see in the show.
One great 'miraculous dying fanfiction' could be about a character sacrificing themselves heroically. For example, a Miraculous holder using their power to the extreme to save the city from a huge threat and in the process, succumbing to their injuries. This kind of story often plays on the themes of self - sacrifice and the heavy price of heroism.
Well, there's a fanfiction where Marinette, with the Mouse Miraculous, teams up with other Miraculous holders in a different kind of battle against Hawk Moth. It's really interesting as it explores how the Mouse Miraculous can be used in group strategies. Also, 'Mouse - Marinette's New Perspective' is a story that delves into how Marinette's personality changes a bit when she uses the Mouse Miraculous, becoming more cautious and observant.
One great fanfiction could be where Marinette discovers the Peacock Miraculous in a hidden attic in Paris. She has to quickly learn to use its powers to stop an akumatized villain that is causing chaos in the city. The story could explore how she combines the powers of the Ladybug Miraculous she already has with the new Peacock powers.
I really like the fanfiction where Marinette uses the Peacock Miraculous to create a sentimonster that can disguise as Hawk Moth. This allows her to infiltrate his lair and find out his true identity. It's a very exciting plot that keeps you on the edge of your seat.
One possible scenario could be that Adrian plans an elaborate, romantic proposal. He might take Marinette to their special place, like the park where they first met, and get down on one knee surrounded by beautiful flowers and candles. Another scenario could be that he proposes during a big event, like a masquerade ball where they are both dressed up. He could remove his mask and present the ring with a big, heartfelt speech.
Maybe Adrien plans a big event at the school. He decorates the classroom where they have shared so many memories. He invites all their friends and family secretly. Then, in the middle of a speech about how much Marinette means to him, he pulls out the ring and asks her to marry him. Marinette is overjoyed and the whole room erupts in cheers.