Well, the plot could involve Naruto learning some unique skills from Yamamoto. Maybe Yamamoto teaches Naruto some advanced fire - based jutsu similar to his own Zanpakuto abilities in the Bleach universe. Naruto could then combine these new skills with his own Rasengan or Shadow Clone jutsu, creating some really powerful and unexpected attacks.
They might develop a mentor - student relationship. Yamamoto could be a strict but fair mentor, guiding Naruto's growth.
One possible plot could be that Naruto somehow discovers the works or the world of Yamamoto. Maybe through a mysterious portal or a powerful jutsu gone wrong. And he becomes a huge fan, trying to incorporate Yamamoto's ideas or skills into his ninja world. For example, if Yamamoto is known for some strategic warfare, Naruto could try to apply those strategies to his battles against the Akatsuki.
Well, the plot could involve Naruto learning unique magic skills from Merlin. Maybe Merlin helps Naruto control his chakra in a new way using magic. For example, Naruto could learn to blend his shadow clone jutsu with illusion magic he gets from Merlin.
One possible plot could be that Naruto, under Zabuza's training, learns new and unique water - style jutsu. Zabuza, being a master of silent killing, could teach Naruto stealth techniques. Naruto might also gain a different perspective on the shinobi world from Zabuza, who has a more ruthless view compared to his usual teachers. This could lead to internal conflicts within Naruto as he tries to balance his own values with the new knowledge.
One possible plot could be that Naruto is somehow transported to the One Piece world. Zoro, seeing Naruto's potential and his own experience in training, decides to take Naruto under his wing. Zoro might start by teaching Naruto basic swordsmanship, which Naruto initially struggles with as he is used to his ninjutsu. But gradually, Naruto starts to incorporate his own chakra control into the sword techniques, creating unique attacks. They could also go on adventures together in the One Piece world, facing pirates and other threats, all while Naruto is constantly learning from Zoro's strict and disciplined training methods.
One possible plot could be that the female Naruto has to overcome the initial disbelief and discrimination within the village. Tsunade, seeing her potential, takes her under her wing. She trains her not only in physical combat like the Rasengan but also in medical ninjutsu. As she grows stronger, she faces off against new threats to the village, using her unique combination of skills learned from Tsunade and her own natural tenacity. Eventually, she earns the respect of the entire village and becomes a great ninja like her male counterpart was in the original series.
Well, it could be about Naruto being forced into a dark situation where he has to train for killing. Maybe he's been misled or there's a great threat that makes him think this is the only way. For example, he might be tricked by an enemy who disguises as a friend and convinces him that the only way to protect the village is to become a killer.
Well, in such a fanfiction, Naruto might learn unique skills from the summons. For example, he could learn stealth from a cat - like summon or brute strength tactics from a bear - like one.
In the 'naruto trained seriously fanfiction', Naruto could be training with his friends in a more serious way. They might form a special training group where they push each other to their limits. For example, they could be training to improve their teamwork and combination jutsus. Naruto might focus on his speed and strength training while also learning how to better coordinate with his friends' abilities, like Sasuke's Sharingan - based attacks and Sakura's medical and combat skills.
In this fanfiction, perhaps Naruto could learn some unique jutsu from Asuma. Asuma was known for his wind - style jutsu, so he might teach Naruto advanced wind - style techniques that Naruto could incorporate into his Rasengan, creating a more powerful attack.