- Park Shin-hye as Yoo Hye-jung
She gained recognition for starring in the television dramas Stairway to Heaven and Tree of Heaven, Pinocchio, Memories of Alhambra etc. popular dramas.
Park Shin-hyethen 26 and now 31
Park Shin-hye is in a relationship with Choi Tae Joon
- Kim Rae-won as Hong Ji-hong
The actor is best known as My Little Bride, Sunflower, The Prison,
TV series Love Story in Harvard, Gourmet, A Thousand Days’ Promise, Punch, Doctors Kim Rae-wonthen 35 and now 40Kim Rae-won is in a relationship.
- Lee Sung-kyung as Jin Seo-woo
The actress is best known for Doctors, Cheese in the Trap, Dr.
Romantic, and Weight lifting Fairy Kim Bok-joo
Lee Sung-kyung then 26 and now 31
Lee Sung-kyung is single
- Yoon Kyun-sang as Jung Yoon-do
The actor is best known for his supporting roles in the television series Pinocchio, Six Flying Dragons and The Doctors. He then played lead roles in The Rebel, Oh, the Mysterious, Clean with Passion for Now and Class of Lies
Yoon Kyun-sang then 29 and now 31
Yoon Kyun-sang is single
- Kim Min-seok as Choi Kang-soo
The actor is best known for his supporting roles in television series such as Flower Band, Descendants of the Sun, The Doctors and Innocent Defendant.
Kim Min-seok then 26 and now 31
Kim Min-seok is in a relationship with Park Yoona
- Ji Soo as Kim Soo-cheol
The actor is best known for starring in television series Cheer Up!, Page Turner and Moon Lovers: Scarlet Heart Ryeo as well as the film One Way Trip etc. Ji Soothen 23 and now 28 Ji Soo is single.
- Namkoong Min as Nam Ba-ram
The actor is best known for his performances in Beautiful Gong
Shim, Good Manager, Falsify, Doctor Prisoner, Hot Stove League,
Awaken and The Veil
Namkoong Min then 38 and now 43
Namkoong is married to Jin Ah Reum.
- Moon Ji-In as Cheon Soon-hee
She is best known for her role in the 2016 SBS television series The Doctors as well as Tomorrow Boy, Beauty inside etc.
Moon Ji-In then 30 and now 35
Moon Ji-ln is single
- Baek Sung-hyun as Pi Young-gook
The actor is best known for starring in films and TV series like Kokkiri (Elephant), Our School’s E.T., The Accidental Couple, and Insu- The Queen Mother
Baek Sung-hyun then 27 and now 32
Baek Sung-hyun is married to Sung Joon.
- Pyo Ye-jin as Hyun Soo-jin
The actress is best known for Taxi Driver, What’s Wrong With Secretary Kim, Hotel Del Luna, VIP and many other famous TV series
Pyo Ye-jinthen 24 and now 29Pyo Ye-jin is single.
- Um Hyo-sup as Jin Myung-hoon
The actor is best known for playing supporting roles in films and television dramas.
Um Hyo-supthen 50 and now 55 Um Hyo-sup is single