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.
In a more creative fanfic, an ancient ninja who was the originator of the Chidori technique could appear. This ninja could be brought back to life through some sort of magic or jutsu. He sees Naruto's pure heart and decides to pass on the Chidori knowledge to him, believing Naruto will use it for good.
Maybe Sasuke teaches him the Chidori in a moment of camaraderie. And for the Rasengan, it could be an older and wiser Naruto from the future who travels back in time to teach his younger self.
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.
In a fanfic where Naruto knows the Chidori, it could change the power dynamics in battles significantly. Naruto's already vast chakra reserves combined with the piercing and fast - acting nature of the Chidori would make him an even more formidable opponent. He could use it in close - quarter combat situations, perhaps integrating it with his Shadow Clone Jutsu in creative ways. For example, he could have clones perform the Chidori from different angles, catching his enemies off - guard.
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.
In fanfiction, Naruto creating Chidori could be possible through some creative plot devices. Maybe he was taught by Sasuke in an alternate universe where they teamed up earlier. Or perhaps he discovered a scroll that had the knowledge of Chidori and was able to learn it on his own with his determination and quick - learning ability.