Hearts of Nineteen (Korean: 열아홉 순정; RR: Yeorahob Sunjeong; lit.

Pure Nineteen) is a 167-episode South Korean television drama/romantic comedy broadcast by KBS1 from mid 2006 to early 2007.

[1] Yang Gook-hwa (Korean: 양 국화) is a nineteen-year-old country girl who leaves Yanbian and travels to Seoul because she is marrying Hong Soon-goo (Korean: 홍 순구), the third son in an average but respectable family.

Instead of returning to Yanbian, she decides to stay and create a new life in Korea while sending money back to her aunt and uncle.

His former classmate Park Yoon-hoo (Korean: 박 윤후), the son of UT's CEO, also works in the marketing department, in a higher position.

Yoon-hoo's spoiled younger sister Yoon-jeong (Korean: 윤정) attends college.

The oldest child, Yoon-ji (Korean: 윤지), is estranged from the family due to her marriage to a poor car salesman.

When Yoon-hoo is at the airport waiting to board his flight, Gook-hwa constantly thinks if she should chase after him and tell him the truth.

In episode 89, Yoon-hoo yells at Gook-hwa, saying that “I left my house to show my true feelings about you.

Yoon-hoo also decides to help Gook-hwa become more sophisticated and sends her to an academy to help her prepare for her college entrance examination.

However, Soo-jeong (Korean: 수정), Yoon-hoo's ex-girlfriend, returns to Korea as a divorcee with her son from her previous marriage.

On the other hand, Chairman Park decides to trust Yoon-hoo's decision, while Yoon-ji and Gwang Man support his decision as well, as Gook-hwa has gained the acceptance of Chairman Park, Yoon-ji and Gwang-man with her modesty and kind-heartedness.

The show concludes with a scene of Yoon-hoo and Gook-hwa on a cruise ship on the Han River, celebrating her passing of the college entrance examination.

Eventually Yoon-jeong says that she won't chase him anymore and she will stop wasting her time.

When she fakes it, her mother says that Woo-kyung and Yoon-jeong must be married quickly since sex before marriage is very bad in Korea.

Woo-kyung's mother opposes his plan, reminding the fact from 10 years ago.