The seven Blu-ray disc volumes of K-ON! have an extra short anime "Ura-ON!"
Fumiko's Confession
Muhyo & Roji's Bureau of Supernatural Investigation
Time Bokan Series: Yatterman
Nurse Witch Komugi-chan Magikarte Z
My Wife is the Student Council President!
Stratos 4
How clumsy you are, Miss Ueno.
Astarotte's Toy EX
Sound! Euphonium 2 Specials
Ladies versus Butlers!
K-ON!
K-ON!!: Ura-On!!
