Naruto, being the energetic and battle - loving guy he is, would likely be on the edge of his seat, eager to see who comes out on top in each death battle. He might be making bets with himself about the outcomes. Hinata, with her gentle nature, would be a bit more subdued. However, she would also be intrigued. She might be more concerned about the safety of the fighters, even though it's just a fanfiction battle. And when a fight gets really intense, she might clutch Naruto's arm without realizing it, while Naruto is too engrossed in the action to notice at first.
Hinata might be very hurt. She's a sensitive person, so Naruto yelling at her could make her feel small and sad. She might start to doubt herself and her abilities.
Naruto would be extremely hurt. He loves Hinata deeply and to find out she cheated with Kiba would be a huge blow to him. He might go into a state of shock and disbelief at first.
Naruto might be shocked at first. He could stand there frozen, unable to believe what he's seeing. His face would probably show a mix of confusion and hurt.
I really like 'Naruto and Hinata: Love in the Hidden Leaf'. In this fanfic, the author delves into the small moments between them that were often overlooked in the original series. It shows how Hinata's shy glances and Naruto's obliviousness gradually turn into a mutual understanding and love. Also, 'Hinata's Hope' is a good read. It starts with Hinata's perspective and how she dreams of a future with Naruto, and then the story unfolds to make that dream a reality.
For Naruto, he could be developed by showing his growth in handling academic responsibilities. In college, he might struggle at first with things like time management and studying for exams. But as the story progresses, he learns to be more disciplined. Hinata, on the other hand, could be developed by showing her becoming more assertive. Maybe she starts to speak up more in class and participate in group projects, which is a big change from her shy self.
Naruto might be overjoyed. He's always been someone who values friendship and love, and Hinata's confession could be like a dream come true for him. He could immediately accept her love and start planning a future together.
Since it's a fanfiction, it could be really diverse in its plot. It may center around Hinata's family history in the past and how that affects her in the Naruto story. Maybe she discovers something about her clan's past that gives her new powers or a new understanding of her place in the ninja world. It could also involve her going back in time to prevent some sort of disaster that was hinted at in the original Naruto series.
At first, Naruto might be in shock. He has always trusted his friends, so the sudden betrayal would be a huge blow. He could be silent, unable to process what has just happened.