The character of K.K. Ichikawa (Nobu Matsuhisa), the Japanese highroller, is based on the life of high roller Akio Kashiwagi. During the 70’s and 80’s, Kashiwagi was a big scene at Las Vegas casinos. By the end of the 1980s, however, Kashiwagi had used up his casino credit, owing many casino executives, among them Donald Trump, millions of dollars. He was murdered in his home in Tokyo by the yakuza (Japanese mafia) in 1992.