It is almost the end of the year, and Houkago Tea Time has been invited to participate in a live house on New Year's Eve! The iconic band members are Yui Hirasawa, the carefree guitarist who is enthusiastic to play music; Mio Akiyama, the shy bassist who gets embarrassed easily; Tsumugi Kotobuki, the gentle and sweet keyboardist who finds joy in normal activities; Ritsu Tainaka, the extroverted drummer who likes to tease Mio; and Azusa Nakano, the rhythm guitarist who is one year younger than the rest but slightly more mature. Performing in the set gives the girls the rare opportunity to meet various people from different bands, including the one that invited them, Love Crysis. Will Houkago Tea Time be able to delight their audiences successfully? [Written by MAL Rewrite]

The seven Blu-ray disc volumes of K-ON! have an extra short anime "Ura-ON!"

Extra short anime "Ura-On!!" included in the limited edition of the K-ON!! Blu-ray.

The story is set before the main story's "Battle in Nagoya" arc. The Shinoa Squad receives another mission from Guren; to rescue a human girl named Riko from a mysterious vampire, Shahar, and bring her back to her family. However, Ferid and Crowley also appear when they find Shahar. Can Yuuichirou save the girl? (Source: Crunchyroll)