Ritz Kobayashi’s mahjong manga received a 4-episode TV drama in late 2016, and then a live-action film earlier this year.
The live-action drama will premiere on December 2017 and will have four episodes (much like the original), while the live-action movie, as well as the TV special, will premiere both in January 2018.
The Achiga-hen spin-off will also be following the format and the timing of the previous live-action adaptation.
As for the spin-off manga the new live-action adaptation will be based on, it will focus on the mahjong players of Achiga Girls’ Academy, rather than Saki and her Mahjong Club at Kiyosumi High School.