Hinata and Kageyama's rivalry and partnership evolve throughout the series "Haikyuu!!" as they learn to understand and complement each other's strengths and weaknesses on the volleyball court. Initially, their rivalry stems from their contrasting styles and personalities, but as they spend more time playing together, they develop a strong partnership based on mutual trust, respect, and teamwork. They learn to communicate effectively, anticipate each other's moves, and coordinate their plays to create unstoppable attacks. Their growth as individuals and as a duo is evident as they overcome challenges and work towards a common goal of becoming the best players they can be.