So... is Mahjong Hishouden: Naki no Ryuu finished or not?
It is a bit ambiguous in this case.
Why?
The anime finished before the manga:
Anime finished: July 27, 1990
Manga finished: December 28, 2010
We could not confirm the source content in MangaUpdates.
Watching Order (by release date)
Here you have all the anime relations we detected ordered by release date, so you can see the reason for this status in context and also use it as watching order.
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Synopsis
Mahjong Hishouden: Naki no Ryuu centers around Ryuu, also known as Crying Dragon, an enigmatic figure who gets involved in mahjong games, often with dangerous individuals.
His unique play style involves relying solely on the "ron" move to win, a risky strategy that puts him at the mercy of his opponents.
The anime likely explores the reasons behind Ryuu's specific mahjong strategy and how it intertwines with his dealings with the criminal underworld, creating a tense and strategic narrative focused on the high-stakes world of underground mahjong.