A plot could involve a time - travel aspect. Naruto, Ino, and Sakura are sent back in time to their early days at the academy. They use their future knowledge to change some events, and in the process, their relationships develop in different ways. Naruto could see Ino and Sakura in a new light as they all struggle to keep their time - traveling a secret and deal with the changes they're making to the past. This could lead to a complex web of emotions and relationships between the three.
Perhaps a plot where Naruto, Ino, and Sakura are all put under a genjutsu that makes them experience different versions of their lives with each other. In one scenario, Naruto is married to Sakura but has a deep friendship with Ino. In another, he's closer to Ino romantically while still being friends with Sakura. As they break free from the genjutsu, they have to come to terms with the feelings that emerged during the illusion and figure out how to move forward in their real relationships.
Another plot idea is that Naruto, Sakura, and Ino are transported to a different dimension. In this dimension, they have to find a way back home while also dealing with the new and strange rules. They meet different versions of themselves and their friends. This makes them question their identities and relationships. Along the way, they have to combine their powers and wits to overcome the challenges and find their way back to their own world.
One idea could be a story where Naruto has to go on a mission with Hinata, Sakura and Ino. During the mission, they face various challenges that test their skills and teamwork. Hinata might use her Byakugan to detect hidden enemies, Sakura could heal any injuries, and Ino might use her mind - transfer jutsu for intelligence gathering. This would strengthen their bond and also lead to some character development among them.
A plot could be that Sakura and Ino are entered into a ninja competition together. They have to compete against other teams from different villages. This forces them to work on their teamwork and communication skills. Their different fighting styles and abilities would have to be combined effectively. For example, Sakura's brute strength and Ino's mental manipulation skills could be used in creative ways to outwit their opponents.
One idea could be a time - travel plot. Maybe Naruto, Sakura, and Ino are sent back in time to when the Hidden Leaf was first founded. They have to use their modern - day knowledge and skills to help the founders build the village, and along the way, they learn a lot about their own village's history and each other.
Maybe their team is entered into a ninja tournament where they have to compete against other powerful teams. Naruto and Ino have to learn to combine their skills in new ways. For example, Ino could use her mind - control techniques to help Naruto get closer to opponents for his powerful attacks. This experience could strengthen their bond as a team.
One plot idea could be that Demon Naruto is on a quest to regain his humanity and Ino, with her mind - related abilities, tries to help him. She might be the only one who can reach the part of him that is still Naruto beneath the demon exterior. Another could be that they are forced to team up against a common enemy that is threatening the Hidden Leaf Village. The demon powers of Naruto give them an edge in battle, but they also attract unwanted attention.
One plot idea could be that Naruto, with his Sharingan (assuming some kind of crossover or unique power-up), has to protect Ino from a new and powerful enemy. Maybe an ancient clan has emerged that wants to use Ino's mind - control abilities for their own evil purposes. Naruto, with his Sharingan - enhanced perception and combat skills, stands in their way.
Perhaps Naruto discovers a hidden power within himself that only Ino can help him control. In the process of training together, they grow closer. Their relationship could also face challenges from their friends who don't understand their newfound closeness at first.
One idea could be that Dark Naruto, with his edgier and more unpredictable nature, is initially at odds with Ino. But as they are forced to work together on a mission, they gradually start to understand each other. Dark Naruto might see Ino's strength in her mind - jutsu abilities and Ino could start to see the good in Dark Naruto beneath his tough exterior.
Perhaps Naruto's intelligence allows him to discover a new form of jutsu related to the mind, which Ino is naturally interested in. They collaborate to perfect this jutsu, spending long hours together in research and practice. During this time, they start to see each other in a different light. Their friendship evolves into a romantic relationship, and they face challenges from those who oppose their new jutsu's development.