It's the final year of high school for Yui (guitar), Ritsu (drums), Mio (bass), and Tsumugi Kotobuki (keyboard), the founding members of the Light Music Club. Together with junior member Azusa (guitar), they spend their days in the music room enjoying tea, sweets, and practicing music. Amidst band practice, preparations for the new student orientation performance, scouting for new members, they still have time for "After School Tea Time". It's a delightfully fun time in K-On!