Perhaps a plot where Toga, who is always fascinated by blood, is intrigued by Naruto's Uzumaki bloodline. She wants to study it but instead of attacking him right away, she decides to follow him secretly. Along the way, Naruto senses her presence but instead of fighting, he offers to talk. This leads to a series of interactions where Toga slowly becomes a reluctant ally of Naruto as they face common enemies together.
Well, a cool plot could be that there's a strange jutsu that accidentally links Naruto and Toga's minds. They start seeing each other's memories and experiences. Naruto sees Toga's difficult past which makes him sympathetic, and Toga gets to understand Naruto's dreams for peace. This connection then leads to them trying to find a way to break the link while also dealing with the changes in their feelings towards each other.