Another plot might be that the sister is an outsider who is drawn into the Akatsuki's world against her will. She then has to navigate their complex politics and power struggles while also finding her own place and purpose within the group.
One interesting plot could be the sister having unique powers that she has to hide from the Akatsuki at first. Maybe she has a special ability to heal, which is both a blessing and a curse as the Akatsuki might want to use it for their own ends.
One interesting plot could be a story where Naruto tries to understand the Akatsuki's motives better and ends up befriending some of its members. This challenges his previous beliefs about them being all - evil.
Another plot might involve Naruto learning the secrets of the Akatsuki members. For example, he discovers how each member got their powers and tries to use that knowledge to his advantage. He could also form unexpected alliances within the Akatsuki, like with Sasori or Hidan, which would lead to some really cool and unpredictable story developments.
One possible plot could be that the Akatsuki members, despite their villainous nature in the original Naruto story, see potential in Naruto. They start to train him in unique ways that the Leaf Village never thought of. For example, they might teach him some forbidden jutsu but also instill in him a different view of the ninja world, which causes Naruto to question the values he was brought up with in Konoha.
One possible plot could be Naruto using his new Sage of Six Paths powers to take on the Akatsuki one by one. He could start with Hidan and Kakuzu, quickly dispatching them with his enhanced speed and strength. Then, he moves on to Deidara, outmaneuvering his explosive attacks with his own agility. Another plot might involve Naruto infiltrating the Akatsuki's hideout alone, using his shadow clones as decoys. He could then surprise Pain and defeat him in an epic battle, showing his growth as a ninja.
One possible interesting plot could be Obito revealing his true identity to the Akatsuki members. It would create a huge shock and change the dynamics within the group.
In some fanfictions, Naruto's sister could be in a coma due to a curse. Naruto discovers a rare herb or a special chakra technique that has the potential to wake her up. He has to overcome many challenges, including political opposition within the Hidden Leaf Village who think he's wasting resources on his sister.
One interesting Naruto Akatsuki Naruto fanfiction could be one where Naruto joins the Akatsuki but secretly plans to reform them from within. He uses his unique understanding of the ninja world and his strong will to gradually change the Akatsuki members' views on things like war and peace.
Some fanfictions might focus on the power levels and abilities of the Akatsuki members in unique ways. They could introduce new jutsus or power - ups for the characters, which can lead to really exciting battle scenes and new storylines that deviate from the original Naruto plot.
One interesting plotline could be Naruto joining the Akatsuki and trying to change it from the inside. He might use his ideals of friendship and peace to influence the other members who have mostly known a life of darkness and violence.
There are fanfictions where Naruto joins the Akatsuki for a short time. Maybe he goes undercover to learn more about their plans and ends up having to make some tough decisions. He might start to understand their motives a bit more, which changes his view of them. It could be a story full of moral dilemmas and action as Naruto tries to balance his loyalty to Konoha and his new 'alliance' with the Akatsuki.