Tsutaya Anime lists that the short anime series One Room
will have 12 episodes plus an unaired episode that will be included in its Blu-ray, which will be released on May 26, 2017.
is a short anime series that features a girl for each arc, and it will have three girls total. There will also be male version
planned to air in Spring 2017.
Source: Tsutaya Anime
One Room Special