One possible plot could be that Dark Naruto, with his newfound power and darker side, forms an unexpected alliance with Ino. Maybe they team up to take on a common enemy that the regular shinobi world is too afraid to face. In this story, Ino could use her mind - reading skills to help Dark Naruto control his rage and better understand his power.
A third plot could be set in an alternate universe where Dark Naruto and Ino are from rival clans. However, they meet in secret and start sharing their dreams and fears. Dark Naruto reveals his plans to change the shinobi world in a more radical way, and Ino has to decide whether to support him or try to change his mind.
One interesting plot is where they travel back in time. Naruto, Hinata, and Ino get to see their parents and ancestors. They learn about their family histories and how it affects their present - day relationships and ninja abilities. It's a plot that delves deep into their characters and heritage.
One possible plot could be that Naruto becomes extremely popular after a big mission and Ino and Sakura start to feel jealous of all the attention he's getting from other girls in the village. They might start competing with each other to get Naruto's attention back, not realizing that Naruto is oblivious to their jealousy at first.
One possible plot could be that after Naruto leaves the village for a long mission, Ino realizes she has feelings for him. When he returns, she starts to subtly show her affection. For example, she might always be around to offer him medical help after his battles, using it as an excuse to be close to him.
Perhaps in some fanfictions, the arranged marriage is part of a political move to strengthen the alliance between their clans. Naruto, being the hero of the village, has to accept it. Ino, on the other hand, tries to use her intelligence to find a way out but instead finds herself drawn to Naruto's determination and kind heart.
Another plot could be that the body swap was caused by a strange jutsu gone wrong. In the process of trying to fix it, they end up learning more about each other. Naruto could understand Ino's insecurities better, and Ino could see Naruto's determination and the weight of his responsibilities more clearly. This new - found understanding could change their relationship for the better even after they swap back.
One plot idea could be that Dark Naruto, who has been influenced by some dark force, sees Ino as a key to unlocking a hidden power within himself. Ino, on the other hand, tries to use her mind - related jutsu to understand what's wrong with Naruto and ends up getting caught in his dark world. She has to fight against his darker impulses while also trying to save him from whatever is corrupting him.
Perhaps in the fanfiction, the merge between Naruto and Dark Naruto is caused by a powerful jutsu gone wrong. As a result, Naruto has to struggle to control the darker impulses while also harnessing the newfound power. This internal conflict could lead to some really engaging story arcs where he battles both external foes and his own inner demons.
In a Naruto TG Ino fanfic, a great plot would be if Ino was transformed into a member of a rival village. This would put her in a difficult situation as she has to act like she belongs there while secretly trying to find a way back to her own village and her true form. She would learn about the rival village's secrets and culture during this time.
One interesting plot could be Ino getting transported to an alternate universe where she has different relationships with the Naruto characters. For example, she might be closer to Naruto and they go on adventures together to save the village from a new threat. Another could be Ino developing a new jutsu that only she can use in the 'Road to Ninja' world, which makes her a key player in a battle against a powerful enemy.
One interesting plot could be that Naruto and Ino travel back in time and try to prevent some of the tragedies that happened in the original Naruto story. For example, they might stop the Uchiha clan massacre.