It belongs to the extensive Japanese tradition of mahjong video games with a mascot or recognizable character, in this case tied to the name 'Tenho' (the heavenly hand, one of the game's most prestigious combinations) as a nod to fans already familiar with competitive mahjong references.
It's a niche product designed exclusively for the Japanese audience that follows this board game with the same passion other countries devote to poker or truco.
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