K-on!

K-On! is a slice-of-life anime and manga series that follows the daily lives of four high school girls who form a light music club. The main characters are Yui Hirasawa, Mio Akiyama, Ritsu Tainaka, and Tsumugi Kotobuki. The series revolves around their musical activities, school life, and friendships. K-On! is known for its cheerful and heartwarming tone, cute character designs, and catchy music. It is a popular series among fans of slice-of-life and music-themed anime.