Maybe he discovers a hidden jutsu or ancient power source that has the ability to transform him into a dragon. It could be something that was left behind by an ancient clan or a long - forgotten ninja. As Naruto is always exploring and trying to become stronger, he stumbles upon this power and it changes him into a dragon.
Sure. In some fanfiction, Naruto might jump off a cliff to follow someone he loves who has already fallen. It could be a very emotional moment where he doesn't even think about the consequences but just wants to be with that person. Or it could be part of a self - sacrifice. He jumps off the cliff to protect the village from a powerful threat that is following him and he figures that by sacrificing himself this way, he can save everyone else.
One possible reason could be that he has become jaded after facing so many hardships in his life. He might have seen too much pain and loss, which has made him numb and less caring in the fictional scenarios of fanfiction.
It could be a result of a deal with a powerful and mysterious being. Naruto, in his quest to protect the village, makes a deal where he sacrifices part of his own essence. In return, he is given the power of the Hoshigaki, which slowly transforms him. He then has to figure out how to use this new power without losing his true self.
It could be Sasuke. If Sasuke has continuously pushed Naruto away or done something extremely hurtful, it might have made Naruto feel tired of the whole situation. Since Sasuke is such an important person in Naruto's life, his actions can have a huge impact on Naruto's mental state.
Another reason could be related to Kakashi's past actions. If there are some secrets or things Kakashi did in the past that come to light and Naruto doesn't like them, he could snap at Kakashi. Naruto has a strong sense of justice and loyalty, so if he feels betrayed or misled by Kakashi, his reaction could be to snap.
Ino could be a very complex character in this fanfiction. It's possible that she cheats on Naruto because she has a fear of commitment. Naruto is a very passionate and all - in kind of person, and that might scare Ino. So, to avoid getting too deep into the relationship, she cheats. Or perhaps there's a power struggle at play. She might think that being with a different person would give her more influence or status in the ninja world. And there could be a hidden agenda that she's following, something that she can't achieve with Naruto but believes she can with someone else.
Maybe she's jealous of Naruto's popularity or his strength. It's possible that she feels overshadowed by him all the time and that jealousy turns into resentment, leading her to hurt Naruto.
Sure. There could be a fanfiction where Sakura leaves Naruto to study a rare medical jutsu in a far - off land. She realizes that the knowledge she can gain there will be crucial for saving lives in the village. So, she sacrifices her relationship with Naruto for the greater good. This would show her selfless side and also add an interesting plot twist as Naruto has to deal with her being gone.
Perhaps it's a homage. Naruto respects the past Hokages a great deal, and Tobirama is an important figure in the village's history. Dressing like him could be Naruto's way of showing his respect and also inspiring the younger generation. He might want to show that the values and styles of the past are still relevant today, and by dressing like Tobirama, he can carry on that legacy in a more visual way. Also, it could be for a special event in the village where they are celebrating Tobirama's contributions and Naruto decides to dress the part to be part of the celebration.