Kageyama's time at the All-Japan Youth Training Camp had a profound impact on his skills as a volleyball player. The intense training, exposure to high-level competition, and the opportunity to learn from other talented players and coaches helped him refine his techniques, improve his decision-making abilities, and enhance his overall performance on the court. This experience also contributed to his growth as a team player and leader, making him an even more formidable force in the world of volleyball.