In Haikyuu!!, the theme of overcoming personal fears is addressed through the character development of the main protagonist, Hinata Shoyo. Throughout the series, Hinata faces various challenges and obstacles that force him to confront his own insecurities and fears, such as his height disadvantage in volleyball. Despite these setbacks, Hinata's determination, hard work, and unwavering passion for the sport help him push past his fears and self-doubt. Through his perseverance and growth, Hinata serves as an inspirational figure for viewers, showcasing the importance of facing and overcoming personal fears in order to achieve one's goals.