Hirasawa Yui is a bright and bubbly high school student who joins the light music club, motivated by her passion for music. Despite initially having no experience playing the guitar, her determination and positive attitude help her grow as a musician. Yui is often seen leading with her heart, focusing more on fun and friendship than competition. She loves hanging out with her bandmates and enjoys the simple pleasures in life, often bringing laughter and joy to those around her. With her unique blend of talent and clumsiness, Yui makes an endearing and relatable character who embodies the spirit of youthful exuberance.