It could be a place of healing and growth. Adrien might meet other characters in the hospital who have been affected by the akuma attacks. This could make him more determined to fight against Hawk Moth. For example, he could meet a young child who lost their parents in an akuma - related incident and that would fuel his desire for justice.
The rubble hospital might be a place of danger for Adrien. If Hawk Moth's minions find out he's there, they could try to finish him off. It adds an element of suspense to the fanfic.
Well, in the fanfic, Adrien could be in the rubble hospital due to a battle gone wrong. Maybe he got seriously injured while fighting an akuma. The hospital setting might be a place for him to have some self - reflection and also for his relationship with Ladybug to develop further, like she could visit him secretly.
In the fanfic, it could be related to an emotional turmoil as well. Adrien has a lot of personal issues and secrets. If something really bad happened, like he found out some truth about his family that shocked him to the core, it might have made him distracted during a fight or a dangerous situation. This distraction could have led to him being in the wrong place at the wrong time and getting caught under the rubble when something like an explosion or building collapse occurred.
Perhaps he is found by other characters like his friends or his kwami. His kwami could try to give him some extra strength to recover. If his friends find him, they would call for help and stay with him until medical assistance arrives. They might also try to keep his identity as Chat Noir a secret if he was in his superhero form when he collapsed.
Moreover, in certain fanfictions, Adrien's chastity can be a plot - driving force. It could be that an antagonist targets his chastity, seeing it as a weakness or something to be exploited. This creates tension and conflict in the story, as Adrien has to fight to preserve his values while also protecting the city as Chat Noir.
One possible reason could be that he got injured during a fight with an akumatized villain. In the Miraculous Ladybug universe, battles can be quite intense and Adrien, as Chat Noir, often puts himself in harm's way to protect Paris. Another reason might be some sort of illness that was magically induced, perhaps by a new villain with a different kind of power that targets the heroes in a non - traditional way. It could also be due to overexertion from using his Cat Miraculous too much without proper rest, which could lead to his body breaking down and him ending up in the hospital.
If Adrien is in the hospital, it could create a sense of urgency for Ladybug. She might be more determined than ever to defeat the villains on her own, as she doesn't have her partner by her side. This could lead to her making some risky decisions in battles. Also, she would probably be worried about Adrien's well - being, which could affect her focus during normal life situations as well.
Plagg would also be there. Plagg is Chat Noir's kwami, and he has a special bond with Adrien. He would probably be worried about Adrien's condition and try to cheer him up in his own unique, mischievous way, like making cheesy jokes or trying to steal some cheese from the hospital cafeteria.
Maybe he was poisoned. There could be a villain with the power to create toxic substances, and Adrien accidentally got exposed. It could also be related to his double life stress. Constantly juggling between being Adrien and Chat Noir might take a toll on his health, leading to a collapse or some kind of health issue that requires hospitalization.
Well, he could be there because of a fight with an akumatized villain. Maybe he got seriously injured during the battle and Ladybug had to rush him to the hospital. His identity might be at risk of being discovered if the wrong people see him in his vulnerable state.
It could be related to his emotional state. Adrien has a lot of pressure on him, both as a model and as Chat Noir. The stress could have taken a toll on his health, causing him to collapse and be hospitalized. In the fanfiction, this could be the starting point for his friends, like Nino and Alya, to realize how much Adrien has been hiding and struggling, and they could come together to support him in a new way.