Harry would probably be very concerned and protective. He's been through a lot himself, and he'd want to be there for Hermione. He might try to comfort her by just sitting with her quietly, sharing his own experiences of tough times to let her know she's not alone.
Common elements often include his relationships. For instance, his bond with Sasuke is crucial. If Sasuke were to betray him in a more extreme way than in the original story, it could lead to Naruto's breakdown. His connection to the village is also important. If the villagers suddenly turn against him, that could be a major factor. And his own self - perception, as he constantly struggles with being the 'chosen one' and living up to the expectations placed on him. All these aspects are often explored in 'naruto has a breakdown fanfiction'.
One common theme could be isolation. When Percy has a mental breakdown, he might isolate himself from his friends and loved ones. Another theme could be self - discovery. Through the breakdown, he may start to understand himself better, his fears and insecurities.
Perhaps in the fanfiction, Hermione discovers some dark secrets about the wizarding world or her own family. This new knowledge could be so shocking and difficult to process that it causes her to have a breakdown. It could be something related to the history of magic that goes against everything she thought she knew, or a revelation about her parents that throws her into emotional turmoil.
There are many fanfictions out there with this theme. Some might focus on Naruto's breakdown as a result of the political intrigue in the Hidden Leaf. For example, if he discovers that some of the village elders have been using him for their own gain. Others could be centered around his breakdown in relation to his relationship with Sasuke. Maybe Sasuke does something that completely shatters Naruto's view of their friendship, leading to his mental breakdown.
I'm not sure of specific 'percy has a mental breakdown fanfiction' off - hand. But you can try searching on fanfiction platforms like Archive of Our Own. They usually have a wide variety of fan - made stories and you can use the search terms to find relevant ones.
The never - ending battles and the responsibility of protecting the village could push him over the edge. Naruto is always on the front line, fighting against powerful enemies. The physical and mental exhaustion from these battles, along with the knowledge that if he fails, the whole village will be in danger, can be overwhelming.
Sakura would be very concerned. She has known Naruto for a long time and has seen his growth. She would probably try to be there for him, using her medical skills to make sure he's physically okay and offering emotional support. For instance, she might sit by his side and talk to him about his feelings, just like she did when they were younger.
Jason Todd in fanfiction can be quite complex. In many stories, his dark past as Robin and his resurrection play a huge part. His breakdowns often stem from his trauma. Writers may explore how he copes with his inner demons, like his anger towards Batman. Sometimes, he's portrayed as a loner trying to find his place in the world again after all he's been through.
Another possibility is in a magical world - twist fanfic. Hermione discovers a magical piercing that gives her an extra boost of magical power. However, there are side - effects that she has to figure out how to deal with. Maybe it makes her spells a bit too powerful at first and she has to learn control.