Definitely not. The manga follows the volleyball journey and development of the characters, and Hinata remains an important part throughout without facing death.
Naruto could be a tech geek in a modern AU, working on the latest software developments. Hinata might be a fashion designer. They could meet at a tech - fashion event where Naruto is presenting some new wearable tech and Hinata is looking for inspiration for her new collection. Their relationship would be a blend of two different worlds, with Naruto being amazed by Hinata's creativity in fashion and Hinata being interested in Naruto's technological prowess.
One common theme is the 'unrequited love' at the start. Hinata has a crush on Kiyoko, so many fanfictions play with that dynamic, showing his attempts to get closer to her. Another theme is 'growth', like how Hinata's growth as a volleyball player might make him more appealing to Kiyoko or how they both grow as people through their interactions.
A common theme is friendship. Their relationship on the volleyball court is a strong base for a great friendship in these fanfics. Another is growth. They both grow as players and as people because of their interactions. And teamwork is also often highlighted, as they are a crucial duo in the team.
Growth is also a prevalent theme. Both Hinata and Yachi grow as individuals in the series, and in fanfiction, their relationship is often part of that growth journey. For example, they might help each other overcome insecurities and become better versions of themselves.
In a modern AU fanfiction of Naruto and Hinata, one possible story could be that Naruto is a young entrepreneur, always full of energy and big dreams. Hinata could be an artist, shy but with a heart full of passion. They meet at a local coffee shop where Naruto is pitching his business ideas to some potential investors. Hinata overhears him and is intrigued. Their relationship could start from simple conversations about their dreams and slowly develop into a deep love as they support each other in their respective pursuits.
In this AU, their relationship could start with Naruto using his healing abilities on Hinata after a battle. His gentle care could make Hinata see him in a new light, and she might start to open up more about her feelings for him. This would be the start of a deeper emotional connection.
You can find 'Haikyuu Hinata x Kageyama' fanfics on Archive of Our Own (AO3). It has a large collection of fanfics from various fandoms, and the search function makes it easy to find specific ones like those about Hinata and Kageyama.