There could be fanfictions where the bleeding aspect is tied to a self - sacrifice situation. Maybe Naruto sacrifices himself to protect his friends, and his bleeding is a symbol of his unwavering loyalty. This type of story often tugs at the heartstrings of readers.
First, understand the Naruto universe well. Know the characters, their abilities, and the overall world - building. Then, come up with a plot that involves the bleeding element in a meaningful way. It could be due to a fight or a sacrifice.
One heart - wrenching scene could be when Naruto is bleeding out after a brutal battle with a powerful enemy. His friends are desperately trying to save him, but his life is hanging by a thread. The sight of his pale face and the blood seeping through his clothes is truly tragic.
The storyline could develop with his friends using some kind of rare medical jutsu or finding a magical cure to save him at the last minute. For example, Sakura could discover a new way to heal his wounds that she learned from an ancient scroll.
He probably gets very worried. Kakashi is Naruto's teacher and mentor, so he'd likely be immediately concerned and rush to Naruto's side to assess the situation.
One popular 'Naruto bleeding fanfic' might be those that focus on intense battle scenes where Naruto gets injured and bleeds while fighting powerful foes. For example, a story could be about Naruto's fight against a new, extremely strong enemy from a hidden village. He might be pushed to his limits and end up bleeding but still find the strength to keep going.
It could be a dark magic spell gone wrong. Maybe an enemy cast a powerful curse that not only inflicted harm but also caused excessive bleeding as a side - effect.
In this fanfic, it could be that Naruto is betrayed by someone within the village. They attack him and he is left bleeding out in an alley. Hinata discovers him and tries to heal him using her gentle fist techniques, but she has to face the attackers again while protecting the bleeding Naruto. This would create a tense and emotional situation in the story.
It could be Orochimaru. He has always been interested in Naruto's power. He might set up a trap where Naruto gets severely injured and is bleeding out. Orochimaru could be planning to take Naruto's body or steal his chakra while he is weak.