Often in these fanfictions, Naruto starts learning Raikiri by first strengthening his relationship with Kakashi. He knows that Kakashi is the master of this jutsu. So he might start by doing some basic training with Kakashi, like chakra control exercises. Because Raikiri requires precise chakra control, Naruto would need to be patient and start from these fundamental training sessions. He would watch Kakashi's every move when he uses Raikiri, trying to pick up on the nuances of the jutsu.
Well, for Naruto in this fanfiction, a major challenge would be dealing with the recoil of Raikiri. Since it's a powerful jutsu, it likely has a significant recoil effect on the user. Naruto would need to learn how to manage that so he doesn't get hurt every time he uses it. Also, in the world of fanfiction, there could be other ninja who don't want Naruto to learn Raikiri. They might try to sabotage his training, which would be an external challenge he has to face. And let's not forget that Naruto has his own unique fighting style. He would need to find a way to integrate Raikiri into his existing style without losing his edge in combat.
One great 'naruto raikiri fanfic' could be one that focuses on a new adventure where Naruto uses Raikiri in a creative way. For example, he might use it to break through a powerful enemy's defense in a hidden dimension. Another could be a story where Naruto teaches the Raikiri technique to his younger students, passing on his skills. There are also fanfics that might combine Raikiri with other jutsu to create a super - powerful attack.
The Raikiri in 'raikiri naruto fanfic' can bring about some exciting battle scenes. Imagine a battle where the Raikiri is pitted against other powerful jutsu. The fanfic author can describe the clash in great detail, from the lightning - like speed of the Raikiri to the way it cuts through defenses. This can create a very vivid and intense reading experience for Naruto fans.
Kakashi Hatake is often a main character in 'raikiri naruto fanfic' since he is the one who originally developed the Raikiri. His skills and the way he uses the Raikiri can be further explored in fanfics.
First, research about Raikiri. Know its origin, how it works in the Naruto universe. Then, think of a unique plot. For example, you could set it during a time when Naruto is training in a new location. Next, develop your characters well. If Naruto is your main character, show his growth in relation to Raikiri. For instance, he could struggle with controlling the power of Raikiri at first.
Often, Gai is paired with Kakashi in Hurt Kakashi fanfiction. Gai, with his unwavering belief in friendship and his eternal rivalry with Kakashi, can be a great character to interact with a hurt Kakashi. He might try to pull Kakashi out of his slump through their friendly competition. Also, Rin is sometimes included. Since she has a significant past with Kakashi, her presence in the fanfiction can either be a source of comfort or more pain, depending on how the story is written.
In such fanfiction, the Kakashi OC often has unique physical features. For example, they might have distinct hair color or eye shape that sets them apart.
Kakashi might be initially surprised. But then, he would probably use it as a teaching moment for Naruto. He could say something like 'Naruto, stealing is not the way of a ninja.' And then give him a punishment like extra training.
Often, Naruto is paired with Kakashi in such fanfictions. Their bond from the original series can be explored in new ways in the context of Kakashi's reincarnation. For example, Naruto might be the one to discover Kakashi's reincarnated form and help him adjust.