Park Cha-dol: Starring Lee Jang-woo

As a healthy young adult with a pure heart, he is secretly dating Baek Jang-mi, the daughter of his mom’s friend. He tries his best to finish his school early so he can support his single mom who has to raise three children, but life isn’t just easy. Despite his difficulty in juggling part-time jobs with classwork, he still has a positive outlook on life. While happily carrying on with his dating relationship with Baek Jang-mi, he also feels a great responsibility towards her.

Baek Jang-mi: Starring Han Seon-hwa

Jang-mi, who is in the second year of majoring in fashion design, is a princess of her family who has never suffered in life. Her parents want her to go easy on academic pursuits without worrying about finding a job because they will find a good match for her but she dreams of marrying her true love. She finds true happiness when she starts dating Cha-dol, and when the couple faces the realities of life, she slowly but surely starts to become a mature woman.

Park Kang-tae: Starring Han Ji-sang

Kang-tae is Park Cha-dol’s older brother and while he works at a big corporation, he finds no satisfaction from his job. Eventually, he quits his solid corporate job to pursue a career as a filmmaker but he finds the film industry to be a tough business to crack. But he resolves not to give up on his lifelong dream. He vows to produce the greatest film in the world that will astonish everyone. He is in love with Soo-ryeon, but his relationship with her becomes tenuous because their siblings, Cha-dol and Jang-mi, are also dating each other.

Baek Soo-ryeon: Starring Kim Min-seo

Soo-ryeon is Jang-mi’s sister who also grew up in a wealthy family and now is a cellist with the city orchestra. She is very feminine and always did what her parents told her to do. Despite knowing that her parents would never approve of her relationship with Kang-tae, who is the son of her mom’s friend, she is deeply in love with him.