Actor Lee Sang Woo will be making his small screen return after his marriage to fellow actress Kim So Yeon this past June. He has been cast as Anthony, an idol-turned-actor and the love interest of female lead Han Ye Seul. Cross Gene's Shin has been cast in the role of Han Ye Seul's younger brother, Sa Min Ho.

'20th Century Boy and Girl' revolves around 3 women who grew up in a small town together, their love interests, and friendship. The production will also star Kim Ji Suk, Ryu Hyun Kyung, Oh Sang Jin, and more, and will air sometime in September.