Naruto might be initially excited. He's always eager to learn new and powerful jutsu, and the Chidori is a very cool and strong one. He probably can't wait to start training and show off to his friends once he masters it.
Kakashi's jutsu like the Chidori, which is a powerful lightning - based attack, might interact strangely with the magic in the Harry Potter world. For example, it could disrupt spells if used in close proximity. On the other hand, Harry's magic could potentially be used to enhance Kakashi's jutsu, like using a spell to increase the speed or power of the Chidori.
Well, in certain fanfic scenarios, Naruto could learn paper jutsu as a result of some experimental training. For example, he might be trying to combine different elements of his existing jutsu and accidentally discovers a way to manipulate paper. It could be that his chakra takes on a new form during a particularly intense training session and he realizes he can control paper with it.
The absorption jutsu in fanfics can also vary in its mechanics. There are those where it's a natural ability of a character, like in a fanfic where a certain clan has the genetic ability to absorb chakra. The user has to focus and direct their chakra in a specific way to open up a sort of 'portal' or 'field' that sucks in the energy. They then have to be careful not to overload themselves with too much absorbed chakra, or it could have negative consequences on their body.
In this fanfic, Naruto becomes a jutsu creator through intense study and experimentation. He combines his natural talent and determination to come up with unique techniques.
The Dragon Clan was a relatively well-known online literature author named Jiang Nan. The novel had already been adapted into manga, movies, TV series, and many other forms. Currently, the first book in the Dragon series, Dragon II: Dark Souls, the second book, Dragon III: Dark Moon Tide, and the fourth book in the Dragon series, Dragon V: Battle of Glory, had been released in Jiangnan. In addition, Jiangnan had also released a short collection of the Dragon series, Dragon Anthem.
In fanfiction, the reanimation jutsu might have extended or modified limitations. For instance, in the original, there were clear rules about the caster's control over the reanimated. But in fanfiction, a writer could create a scenario where the reanimated can break free of that control more easily. Also, the source of the sacrifice for the jutsu could be different. In the series, it was usually human sacrifices, but fanfiction might explore using other forms of energy or substances.
Kakashi's reaction would be complex. He is a man who has lost many people in his life. But Naruto was special. He would hold Naruto tightly, his hands trembling slightly. He might try to use some of his own chakra to keep Naruto alive a little longer, but deep down he knows it's futile. His face would show a mixture of pain, regret, and love. He would remember all the times he trained Naruto, all the lessons he taught him, and how Naruto had surpassed all expectations.
Kakashi might immediately offer a comforting presence. He could put his hand on Naruto's shoulder and just be there silently, letting Naruto know he's not alone.
The Saimin Jutsu can be a game - changer in fanfiction plots. It can be used to deceive opponents, which could turn the tide of a battle. For instance, if Naruto is outnumbered, he can use the jutsu to make the enemies think they are being attacked from all sides when in fact it's just an illusion.