My Bittersweet Life

My Bittersweet Life is a South Korean television series starring Jung Eun-chae, Jay Kim, Yoon A-jung and Choi Min. It aired on KBS1 from May 16, 2011 to November 4, 2011 on Mondays to Fridays at 20:25 for 125 episodes.

Synopsis
Go Eun-nim is a girl in her 20s who lives with her great-grandmother and grandmother. She barely managed to graduate from college and now struggles to find a job. Her father died when she was a child, then her mother ran away to marry another man. Eun-nim and Choi Joon-young grew up together; Eun-nim's grandmother had taken in Joon-young and his mother after seeing her suffer at the hands of her husband. Though they treat each other as siblings, Joon-young slowly begins to see Eun-nim as a woman. Eun-nim is cheery and energetic outside, but deep in her heart, her longing for her mother and loneliness grow stronger as time goes by. By chance, Eun-nim gets hired as an intern at an organic food company, Green Love. There, Eun-nim meets Lee Se-in, the third generation offspring of a conglomerate. As the heir of the business, Se-in studied in America and has looks, brains, and wealth; he is also selfish, spoiled and immature. Meanwhile, Hong Joo-mi is also the picture of perfection; proud, confident, beautiful, and unused to failure, Joo-mi went to the best schools and is now the youngest team leader at Chairman Lee's company. At first, Eun-mi and Se-in quarrel everyday over nothing and everything, but in the end, they fall in love with each other. But one day, her mother appears after all these years and asks Eun-nim to donate her bone marrow, to save the life of her son...

Main characters

 * Jung Eun-chae as Go Eun-nim
 * Jay Kim as Lee Se-in
 * Yoon A-jung as Hong Joo-mi
 * Choi Min as Choi Joon-young

Supporting characters

 * Eun-nim's family
 * Ban Hyo-jung as Kim Mal-nam
 * Kim Young-ok as Choi Jung-ok
 * Na Young-hee as Kim Jin-sook


 * Se-in's family
 * Kim Sung-kyum as Chairman Lee
 * Kim Byung-se as Cha Sung-joo
 * Lee Hee-do as Lee Yong-ho
 * Yang Hee-kyung as Heo In-ae
 * Yoo So-young as Lee Se-ra


 * Joo-mi's family
 * Lee Hye-sook as Geum Hwa-yeon
 * Kang Nam-gil as Hong Kyu-man
 * Choi Jae-won as Hong Kyu-young
 * Kang So-ra as Hong Yoon-mi
 * Choi Won-hong as Hong Jin


 * Extended cast
 * Min Joon-hyun as Journalist Kim
 * Choi Eun-suk as house owner
 * Kim Do-yeon as Owner Kim