Japan’s gambling scene is a curious mix of strict laws and quirky exceptions....

https://romeo-wiki.win/index.php/Does_the_TV_Drama_%22Pachinko%22_Have_Anything_to_Do_with_the_Game%3F

Japan’s gambling scene is a curious mix of strict laws and quirky exceptions. While most forms of gambling are illegal, you’ll find legal outlets like pachinko parlours, horse racing, keirin cycling, and kyoutei boat racing