Often, writers will use Naruto's facial expressions to convey his emotions. His brows might be furrowed in distress, his lips quivering. And as he cries, he might clutch a memento, like a headband or a photo of his friends, which symbolizes what he's holding onto while feeling so broken. This shows his vulnerability and the depth of his pain.
One possible reason could be the loss of his friends. Naruto values his friends deeply, and if he were to lose someone like Sasuke again, it would be devastating. Another reason might be the pressure of being the Hokage. The responsibilities are huge, and he might feel like he's not living up to the expectations of the village. Also, memories of his lonely childhood could resurface, making him feel sad and alone, leading to him crying himself to sleep.
It might be an old enemy of Naruto who has come back for revenge. For example, someone from the Akatsuki who wasn't completely defeated before. They could target Naruto again and put him in a life - threatening situation, which makes Kurama cry.
One possible reason could be the burden of his past. Naruto has faced a lot of hardships and the memories might be overwhelming him, making him want to be alone. For example, the loss of his master Jiraiya might have left a deep scar, and he might feel that isolating himself is the only way to deal with that pain.
Maybe he feels a sense of guilt. For example, if something bad happened in the village that he blames himself for, even if it wasn't really his fault. He could exile himself as a form of self - punishment. He has always been very hard on himself when it comes to the well - being of the village and his friends.
You can try some well - known fanfiction websites like FanFiction.net or Archive of Our Own (AO3). These platforms usually have a large collection of Naruto - related fanfictions, and you might be able to find 'sakura cries for naruto fanfiction' among them.
In the world of 'sakura cries for naruto fanfiction', there are various scenarios. One could be that Sakura witnesses Naruto sacrificing himself for the village. She cries not only for the loss of Naruto but also for the selfless act he has done. Another story might be that Sakura has a dream about Naruto leaving forever, and when she wakes up, she cries because it makes her realize how much he means to her. Also, in some fanfictions, when Naruto is wrongly accused of something, Sakura cries because she believes in his innocence and is frustrated that others don't.
One possible reason could be the stress of his ninja duties. He has so many missions and responsibilities that his mind is constantly racing, making it hard to relax and fall asleep.
One possible storyline could be that Sakura witnesses Naruto getting seriously injured while protecting the village. She cries out of fear of losing him and blames herself for not being strong enough to protect him. Another could be Naruto making a sacrifice for a greater good, like leaving the village forever, and Sakura cries as she realizes she might never see him again. Maybe Naruto gets into a relationship with someone else, and Sakura, who has hidden feelings for him, cries in heartbreak.