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.
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.
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.
Well, in a fanfiction where Natsu is found bleeding out, it could be due to a number of reasons. Maybe he got into a really tough fight with a powerful enemy that he underestimated. In Fairy Tail, Natsu is often reckless in battle, so it's not out of the question.
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.
His friends would most likely try to heal him immediately. Wendy, with her Sky Dragon Slayer magic, could be the first to attempt to close his wounds and stop the bleeding. She has great healing abilities, so she would be crucial in this situation.
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.