Their relationship could be shown as a source of strength. In the face of the new and dangerous situations in the Power Rangers' world, Naruto and Hinata would rely on each other. Naruto would be more protective of Hinata, and Hinata would be Naruto's calm and supportive partner. For example, when facing a powerful enemy, Naruto would charge forward while Hinata would use her Byakugan to analyze the situation and give Naruto advice.
The relationship could be portrayed as a more harmonious unity. Instead of two separate individuals with different dynamics, the fusion could represent a perfect blend of their relationship. They could be shown as having a single, unified goal in the story, which is a departure from their individual goals in the original Naruto series. This could be something like protecting the entire ninja world in a more inclusive and efficient way, using their combined strengths and insights.
The parents' relationship could also set an example for Naruto and Hinata. If Kushina and Hinata's mother had a strong, loving relationship, Hinata might be more inspired to be as loving and supportive in her relationship with Naruto. Similarly, Naruto could learn from his father's respect for Hinata's family and carry that forward in his relationship with Hinata.
Their relationship would likely deepen. They would have more private time together, sharing their dreams and fears at night. Naruto would become more protective of Hinata in their shared home.
The relationship would likely become more intimate. They'd have more time to just be with each other, sharing their thoughts and feelings without any rush. For example, they could have long conversations at night before going to sleep.
Often, it's portrayed as very loving. Naruto is shown as being extremely protective of Hinata and their family. He values Hinata's opinions and often asks for her advice on village matters.
In such a fanfiction, the relationship between Naruto and Kushina would be one of mother - son love and mutual respect. Kushina would be protective of Naruto and proud of the man he has become. Naruto would look up to Kushina and value her wisdom. With Hinata, Naruto's relationship would be that of a loving couple. Hinata would support Naruto in all his endeavors. When it comes to Kushina and Hinata, Kushina would likely see Hinata as a worthy partner for Naruto and Hinata would respect Kushina for being Naruto's mother and a strong kunoichi.
Sakura's jealousy of Hinata can be portrayed in a more subtle way too. In some fanfictions, she might distance herself from Naruto when she sees Hinata getting closer to him. Instead of showing her jealousy outwardly, she'll withdraw and become more focused on her training or other friendships. But it's clear to the readers that she's jealous because of the way she'll steal glances at Naruto and Hinata when they're together, and the sad look in her eyes when she does so.
In many fanfictions, Sakura's love for Naruto is portrayed as a slow - burning realization. She might be initially more focused on Sasuke but then gradually see Naruto in a new light. Hinata's love is often shown as a constant, unwavering devotion. For example, in some fics, when Naruto is facing a powerful enemy, Hinata is the first to jump in to protect him because of her love. Sakura, meanwhile, might be more hesitant at first but then fully commit to helping Naruto out of love as well.
It can be shown as Naruto being extremely protective. He might be constantly by Hinata's side, holding her hand, and whispering words of encouragement. For example, he could say things like 'You're so strong, Hinata. We'll get through this together.'
In fanfiction, an aggressive Hinata can be depicted as having a no - nonsense attitude towards achieving her goals. If her goal is to be with Naruto, she would actively pursue him, not waiting for him to notice her. She could also be aggressive in her efforts to prove herself as a strong ninja, taking on difficult tasks and showing her skills to Naruto and others without hesitation.