Maybe it's a self - taught ninja who has some unorthodox skills. Anko, being intrigued by this ninja's unrefined talent, decides to train them. This ninja could be someone who has a natural affinity for snake - like movements but doesn't really know how to use it in combat or for stealth. Anko would then help them develop these skills further.
It could be a young ninja from a minor clan who has been overlooked in the regular training regime. Anko sees potential in this ninja and decides to take them under her wing.
The main character could be a genin who has a strong will but lacks proper guidance. Anko notices this genin's determination during a joint training exercise. She decides to train the genin to become a more well - rounded ninja, focusing on improving their speed, strength, and strategic thinking, all while teaching them some of her signature snake - related jutsu.
One possible plot could be that Anko takes on a young and inexperienced ninja as her apprentice. She could start with basic physical training, like running through the forest while dodging various traps she sets up. Then, she might move on to teaching ninja techniques, especially those related to her own special skills in snake - based jutsu.
Naruto becomes more self - reliant. Anko's training often involves solo tasks and challenges. So Naruto learns to rely on his own skills and instincts more, rather than always looking for backup from his friends. For example, he might learn to scout an area alone or set traps without help.
Naruto could save Anko from a rogue ninja who infiltrated the training grounds. He'd use his ninja skills and his determination to keep Anko safe.
It could be a rogue ninja from Orochimaru's former experiments. This ninja might hold a grudge against Anko for betraying Orochimaru and decides to target her. Naruto would then have to face this powerful and vengeful enemy to save Anko.
Perhaps a rogue ninja group that has a vendetta against Anko. When she forms this new family with Naruto, they target the whole family unit to get back at her. They might see Naruto as a way to get to Anko or vice versa, and constantly attack and create chaos for them.
It could be a rogue ninja from a hidden village who has a vendetta against Konoha. This ninja might target Kurenai and Anko specifically because of their skills and knowledge, and Naruto gets in the way while trying to protect them.
In this fanfiction, Naruto's training progress could be quite interesting. Anko, being an experienced ninja, would likely start Naruto off with physical conditioning. He would have to run through the forest, climb trees, and do other stamina - building exercises. Then, she might introduce him to some of her own ninjutsu. Naruto, with his determination, would practice them day and night. His progress would be marked by his ability to execute these new jutsus more accurately and with greater power over time.
In this fanfiction scenario, Naruto might save Anko from a dangerous training accident. Maybe Anko was attempting a very difficult jutsu during training and lost control. Naruto, with his quick reflexes and growing power, could sense the danger and rush in to protect her. He might use his Rasengan or some new techniques he has learned to counter the threat.
It could be a new student at Hogwarts. A young wizard or witch who has always been curious about goblin magic. Maybe they come from a family with a long - standing interest in different magical cultures, so they jump at the chance to train with goblins.
A young prodigy athlete would be a great main character. For instance, a 16 - year - old gymnast who has shown great potential in her home country but realizes she needs to learn from the best around the world. She travels from the United States to China to study the strict training regimens of Chinese gymnasts, then to Romania to understand the unique styles developed there.