Shana! Ask Anything Question Box (Dub)
Watch Shana! Ask Anything Question Box full episodes English dub online kissanime.
Other name: Shakugan no Shana: Friagne to Marianne no Naze Nani Shana! Nandemo Shitsumonbako!
A series of short specials where Friagne and Marianne explain different terms from the show.
Sources: Myanimelist, Wikipedia