Yui Hirasawa is a fictional character from the popular anime and manga series K-On!. She is a high school student known for her cheerful personality and love for music. Yui plays the guitar and is the lead vocalist of the Light Music Club, where she and her friends bond over their passion for creating and performing music. Yui is characterized by her carefree attitude and occasional clumsiness, which often leads to humorous situations. Despite her lack of experience at first, she quickly becomes a talented musician, showcasing her growth throughout the series. Her friendships with other club members, like Mio Aoyama and Ritsu Tainaka, are central to the story.