In a Naruto Hinata training fanfiction, the author could explore Hinata's inner strength. Maybe she's training to overcome her shyness as well as improve her combat skills. Naruto, being the supportive friend, helps her break out of her shell. This could lead to some really interesting character development for both of them, and perhaps even a budding romance in the future.
In this type of fanfiction, the training could be a way for Hinata to prove herself worthy of being on Naruto's team for a special mission. She could be training day and night, with Naruto as her occasional sparring partner. As they train, they start to understand each other's motives and dreams better. This could be a really heart - warming story of friendship and mutual respect.
Well, perhaps Hinata is jealous. She might see Sakura getting trained by Kurenai as an advantage that Sakura will gain over her. In the world of fanfic, there could be unspoken rivalries or insecurities. Maybe Hinata had hoped to be trained by Kurenai herself and feels left out now.
Naruto might become more in tune with the Kyuubi's power. He could access more of its chakra easily and use it more effectively in battle. For Hinata, she may gain a new sense of boldness. The training could make her less shy and more assertive in combat situations.
Their relationship can develop as they rely on each other during training. For example, Naruto might start to see Hinata in a new light when she saves him from a tricky training situation using her skills. This newfound respect can be the start of deeper feelings.
One common theme is the growth of their relationship. They start to understand each other better. Another theme is power - up. They gain new abilities or improve existing ones during the training.
The training by Kaguya could strengthen their relationship. They would be sharing a unique experience, facing the challenges of Kaguya's training together. This would likely create a deeper bond between them as they support and encourage each other through the difficult training.
One idea could be that during their training, Naruto discovers a new form of chakra control while Hinata helps him by using her Byakugan to analyze his flow. Another could be they train in a secret location filled with ancient ninja challenges that test both their physical and mental strength.
One consequence could be a strain in their relationship. Hinata might start avoiding Kurenai, which could create an awkward atmosphere. For example, if they are in the same team or group, it could affect their teamwork.
In the fanfiction of their training trip, there are several possibilities. Naruto, being the energetic one, would probably push Hinata out of her comfort zone. They could meet some strange characters who give them unique training methods. For example, they might find an old hermit who teaches them a special type of chakra control. This would not only enhance their skills but also bring them closer as they face challenges together. Their bond would likely grow stronger as they rely on each other during this trip.