Plot: Romance Zero is a 2009 South Korean television series that aired on MBC Dramanet from February 14 to May 23, 2009 on Saturdays at 23:00 for 16 episodes. Wikipedia
Plot: My Lover, Madame Butterfly is a South Korean romantic comedy television series starring Yum Jung-ah, Park Yong-woo, Kim Sung-soo, and Yoon Se-ah. It aired on SBS from October 16, 2012 to April 7, 2013 on Saturdays and Sundays at 20:40 for 51 episodes. Wikipedia
Plot: Living Among the Rich is a 2011รข2012 South Korean television series starring Kim Hye-ja, Oh Ji-eun, Hyun Woo, Lee Sang-yeob and Lee Bo-hee. It aired on JTBC from December 5, 2011 to August 3, 2012. Wikipedia