Gambling in Japan is a curious mix of strict laws and surprising exceptions....

https://www.wall-bookmarkings.win/gambling-in-japan-is-a-fascinating-paradox-for-travellers-while-most-betting

Gambling in Japan is a curious mix of strict laws and surprising exceptions. While most betting is illegal, you’ll find legal outlets like pachinko parlours, horse racing, keirin cycling, and kyotei motorboat racing