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.
The fanfiction might use his sleeplessness to explore his inner thoughts and feelings. Maybe he reflects on his journey, his growth, and the people he has lost or gained. This self - reflection during his sleepless nights can give readers a more in - depth understanding of Naruto as a person, not just as a ninja.
One classic can't - sleep story is 'The Three Little Pigs'. The story of the three little pigs building their houses, one of straw, one of sticks, and one of bricks, and the big bad wolf trying to blow them down is engaging. It has enough suspense and a happy ending that can soothe your mind. Another could be 'Goldilocks and the Three Bears'. The idea of Goldilocks exploring the bears' house and getting into all sorts of situations is both interesting and can take your mind off your sleeplessness.
The 'Can't Sleep with Tea Concubine' emoji was a popular emoji on the Internet. It was used to express the situation of not being able to sleep after drinking Tea Concubine. This emoji was very popular among the young ladies. It was used to express the feeling of insomnia humorously. Although there was no specific picture of the emoji in the search results, it was certain that the emoji was used to describe the insomnia after drinking the tea.
I'm not sure of the exact name, but there are fanfictions where Naruto's sleep deprivation is caused by nightmares related to his past traumas. In these stories, he struggles to stay awake during the day because the nightmares keep him up at night. This affects his chakra control and his ability to perform jutsus. Some fanfictions focus on how he overcomes this with the help of his friends like Sakura and Sasuke, who try different methods to get him to sleep better.
I have a novel that I can recommend to you. It's called " Elf: I'm the King of Heaven by Taking Medicine." This book described a man who couldn't sleep every day and had to rely on medicine to fall asleep, but a woman's voice could help him fall asleep. This story combined the elements of a drug refiner and a trainer, giving the readers a magical experience.
" My Neighbor Can't Sleep " was an online romance drama directed by Tian Tian and Hu Meng. The main actors included Chen Yixin, Wang Zixin, Ma Xueyang, Yang Ke, Xue Cheng, and Guo Xiwen. The plot told the story of a pianist Xi Song, who was deeply troubled by insomnia, and how he was cured by Song Miduo, a drama queen who dreamed of becoming a romance novelist. Song Miduo was determined to use Xi Song as a model to create a romantic novel that would blow up the entire universe in order to get a chance to study in the Chinese department. The two of them reached a friendly and mutually beneficial condition and started the "pillow plan" of sharing a bed. This drama was different from the traditional sweet drama of an overbearing CEO. It told the story of a genius pianist who was introverted and gradually cured by a lively and cheerful girl. "My Neighbor Can't Sleep" had 24 episodes and was released in 2019.
Well, when you listen to or read a can't - sleep - story, it often has a rhythm to it. Just like a lullaby has a certain melody that soothes a baby, a story has a flow. Let's say it's a story about a long journey. The way the story unfolds, with the description of each step of the journey, creates a pattern in your mind. This pattern can be very relaxing, much like how the repetitive motion of rocking can lull you to sleep. Also, stories can evoke emotions. If it's a heartwarming story, it gives you a sense of comfort, which is conducive to sleep.
A can't - sleep story helps in falling asleep as it creates a mental imagery. When you hear a story, your brain starts to form pictures of what's being told. This mental activity can be calming. Also, many can't - sleep stories have a certain rhythm or pacing. This can be similar to a lullaby. The gentle progression of the story, whether it's a fairy tale or a simple adventure story, lulls your mind into a more relaxed state, making it easier for you to drift off to sleep.
One classic is 'The Little Prince'. Its gentle and philosophical story can ease your mind. The tale of the little prince traveling from planet to planet and his interactions with different characters can be both soothing and thought - provoking as you lie in bed, gradually making you feel calm and sleepy.