In Haikyuu!!, the concept of legacy is explored through characters like Daichi and Suga by showcasing how their leadership, experience, and dedication influence the younger generation of volleyball players on their team. Daichi, as the team captain, embodies the values of hard work, resilience, and teamwork, which he passes down to his teammates, creating a sense of continuity and growth within the team. Suga, on the other hand, serves as a mentor figure who provides guidance and support to his younger teammates, helping them realize their full potential and carry on the team's legacy. Through these characters, Haikyuu!! highlights the importance of passing down knowledge, skills, and values to future generations in order to continue a legacy of success and camaraderie.