Chō-Han Bakuchi
Chō-Han Bakuchi or Chō-Han for short. Is essentially a simple dice game of odds vs evens. It's a very old form of Japanese gambling known for its fairness. It's most recognizable because the dealer is required to pull back their sleeves to prove they aren't cheating. In the case of women a simple sleeve can do, but men are generally required to take off their entire shirt. It's actually shown pretty frequently in Japanese media and I understand you can actually even date a Chō-Han dealer in Yakuza 5.
The game is simply two dice in a cup, roll it out, and bet on if the roll will turn out odd or even. Incredibly simple, as close to impossible to cheat as you can get.
The concept is so simple even loaded dice would serve no purpose if you can't change them out for the opposite result after every single round of betting is concluded.
