Yuka Kosaka was born in Izumi-ku, Yokohama, Kanagawa, Japan. She is a Japanese actress and model who is also know by her nickname Yuka-chin and has starred in a number of TV dramas and films. She debut in 2004 after winning the Grand Prix award in Miss Magazine 2004. Yuka also became a frequent guest on Matthews Best Hit TV. In 2004 she became the campaign girl for the Japanese convenience store Circle K Sunkus.