One possible reason could be a powerful curse placed on him. Maybe an enemy with dark magic managed to put a slow - acting curse that is gradually sapping his life force.
Well, it might start with Naruto feeling weak and tired more often. His friends would notice his decline but he would try to hide it at first. As the story goes on, he would start losing his ability to perform jutsus as effectively.
Neville could be involved too. He has grown into a strong wizard and would surely want to help his friend. Ginny, who has a special connection with Harry, would be at his side constantly. There could also be some new characters introduced, like a healer from a far - away land who has unique knowledge about Harry's condition.
One possible plotline could be that Harry is suffering from a mysterious curse. Maybe he got it during a battle with a dark wizard. His friends would then be on a desperate quest to find a cure, traveling to far - off places and consulting with various magical experts.
Maybe Naruto is affected by a dark and ancient curse. This curse was placed on him by an unknown enemy. It starts to take hold gradually, making him weak and sick. He begins to have strange visions and nightmares. His body slowly deteriorates, and he loses his appetite. His friends notice his strange behavior and the physical changes, but Naruto is determined to keep fighting until they find out what's wrong with him.
A new, powerful demigod who is jealous of Percy's fame and power could be the villain. This demigod has discovered a dark spell that they use on Percy, causing him to slowly die. They want to take over Percy's position as the 'hero' among the demigods.
Maybe Percy is cursed by a powerful god or goddess who is angry with him. The curse causes his life force to slowly ebb away. His demigod powers start to fade too. His friends notice strange things like his sword not being as effective in battle and his ability to control water weakening. They then go on a quest to find the source of the curse and break it.
" The Immortal Path to the Mortal World " was a Xianxia cultivation novel. It told the story of a mortal youth, Yang Jiahao, who accidentally obtained a cultivation secret manual and embarked on the path of immortal cultivation. In this world, self-cultivators could control the spiritual energy of heaven and earth and possess extraordinary power. The novel used the protagonist's growth as a clue to construct a cultivation world full of surprises and fantasy. Every character in the story had their own dreams and pursuits. The protagonist overcame difficulties and grew up until he finally rose to become an immortal cultivator. There was also a mobile version of " The Immortal Path to the Mortal World " that allowed players to experience the magic and charm of the Xianxia world in the game.
" The Immortal Path to the Mortal World " was a Xianxia cultivation novel. It told the story of a mortal youth, Yang Jiahao, who accidentally obtained a cultivation secret manual and embarked on the path of immortal cultivation. In this world, self-cultivators could control the spiritual energy of heaven and earth and possess extraordinary power. The specific plot and details of the plot could only be understood by reading the chapters of the novel.
The Immortal Path Mortal World was a Xianxia cultivation novel that told the story of a mortal youth growing up on the path of cultivation. The protagonist in the story accidentally obtained a cultivation secret manual and began to embark on the path of cultivation. In this world, self-cultivators could control the spiritual energy of heaven and earth and possess extraordinary power. The specific plot and plot details needed to be read through the chapters of the novel.