will include an episode 0 short anime titled Mijikamon (Mijikai Barakamon)
on Volume 1, to be released on September 24, 2014. It is also currently out on YouTube
; however, it is region blocked.
, Official site
Update July 6
There is another episode
out for episode 1 (though also region blocked). In addition, all four volumes of the anime will have Mijikamon
episodes, so there will be a series of Mijikamon episodes for all episodes of the main series.
Source: Official site