The first episode/chapter of Haikyuu!! sets the tone for the series by introducing the main protagonist, Hinata Shoyo, who is passionate and determined to become a great volleyball player despite his lack of height. The episode also establishes the themes of teamwork, friendship, and overcoming obstacles through hard work and perseverance. Additionally, the energetic and dynamic animation style, along with the intense volleyball matches, showcase the competitive and exhilarating nature of the series.