The business card (名刺 Meishi) is Mr. Yukawa's business card that Ryo Hazuki obtains in the What's Shenmue? demo.
When Ryo asks Yuji Nito of You Arcade about Mr. Yukawa, he learns that he was at the Arcade. Yuji shows him his business card and tells him there's something written on the back of it. Ryo asks if he can keep it, and Yuji allows it. On the back of the card it has the Dreamcast logo with the words "4 p.m. Asia Travel Co." written on it.