Suzume, a new employee at Kazamatsuri Construction, is assigned to the "Entertainment Mahjong Department"!? In a world where gambling on mahjong has been legalized based on a research report that "gambling on mahjong can prevent dementia," corporate warriors are battling it out, risking the fate of their companies! This near-future business suspense story is born from "Entertainment Mahjong Player," included in novelist Hotate Shikawa's "Fictional Six Laws Concerning Healthy Rebellion in the Reiwa Era and Other Reiwa Eras (published by Shueisha)"!
(Source: Comic Days, translated)
— Description from AniList community (anilist.co).