Senyuu. Specials (Sub)
Watch Senyuu. Specials full episodes online enghlish sub
Synopsis: Unaired episodes of Senyuu. released with BD/DVD volumes.
1. Yuusha, Nagurareru. / Nise Panda no Seitai (Vol. 1)
2. Shitsujichou no Tabi Sono 1 (Vol. 2)
3. Shitsujichou no Tabi Sono 2 (Vol. 3)
4. Gakuen Senyuu.: Seishun Monogatari (Vol. 4)
More info: myanimelist, wikipedia