As you probably know by now, the heartwarming K-drama 18 Again is based on the 2009 American movie 17 Again! Both the film and the series tells the story of a middle-aged man who is suddenly transformed back to his high school self, and he uses it as a chance to fix his *broken* relationships with his wife and children. Over the past months, we've grown to love both the Korean adaptation and the OG movie equally! And in case you haven't seen the drama (or the movie), here's a comparison of what the 18 Again and 17 Again cast members look like:
MORE ABOUT THE DRAMA:
- 7 '18 Again' Actors You Absolutely Need To Follow On Instagram
- 7 Reasons You Should Watch The K-Drama '18 Again'
1. 18-year-old Hong Dae Young/Go Woo Young (Lee Do Hyun)
The 17 Again version: 17-year-old Mike/Mark Gold (Zac Efron)

2. Hong Dae Young (Yoon Sang Hyun)
The 17 Again version: Mike O'Donnell (Matthew Perry)

3. Jung Da Jung (Kim Ha Neul)
The 17 Again version: Scarlet O'Donnell (Leslie Mann)

4. 18-year old Jung Da Jung (Han So Eun)
The 17 Again version: 17-year-old Scarlet (Allison Miller)

5. Dae Young's BFF Go Deok Jin (Kim Kang Hyun)
The 17 Again version: Ned Gold (Thomas Lennon)

6. Dae Young's daughter Hong Shi Ah (Roh Jeong Eui)
The 17 Again version: Maggie O'Donnell (Michelle Trachtenberg)

7. Dae Young's son Hong Shi Woo (Ryeoun)
The 17 Again version: Alex O'Donnell (Sterling Knight)

8. School jock Goo Ja Sung (Hwang In Yeop)
The 17 Again version: Stan (Hunter Parrish)

9. Da Jung's BFF Choo Ae Rin (Lee Mi Do)
The 17 Again version: Naomi (Nicole Sullivan)

10. Hong Shi Ah's Friends
The 17 Again version: Maggie's Friends

MORE ABOUT THE DRAMA:
- 7 '18 Again' Actors You Absolutely Need To Follow On Instagram
- 7 Reasons You Should Watch The K-Drama '18 Again'
18 Again is currently available for streaming on Viu and iQIYI.
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