Rui is very sly, teasing, and playful. He takes his job seriously, and uses his assistant Tsukasa to trick people who don’t pay their debts into giving him money. He loves teasing Tsukasa, and always has him by his side. He’s eccentric and extremely cunning, he always makes sure customers play fair and safe. He’s very stern with people who don’t pay their debts or follow guidelines. His casino is a popular spot for sketchy activity and groups, giving the place a mysterious and villainous vibe.