1. CHEESE IN THE TRAP
  2. Misaeng
  3. Healer
  4. Heirs
  5. Dots
  6. Reply 1997
I'm not much of a re-watcher, but I watched Goblin 3 times. Not the whole drama, just my OTP scenes.
1. Healer
yet to re-watch any other series
none i dont like rewatching dramas :/
so far nothing beats It's Okay That's Love
Cheese in the Trap
The Heirs
Weightlifting Fairy Kim Bok Joo
Reply 1988
My Sunshine
The Princess' Man
Weightlifting fairy kim bok jo
Goblin
Master's sun
Healer
It's Okay That's Love
Healer
Fated To Love You
Cheese In the Trap
Secret Garden
Devil Besdie You
Scarelet Heart Ryeo
Cruel Romance
The Heirs
It Started With A Kiss
Beautiful Mind
The Holy Pearl
Boss And Me
Healer
Devil beside You
Full House Thai vers.
Boys over Flowers
Heartstring
Queen In Hyuns Man
Japanese. 
kimi wa petto (2003). hana yori dango (2005) - both seasons. hotaru no hikari (2006) - both seasons. hanazakari no kimitachi e (2007). rich man, poor woman (2012)
Korean.
my girl (2006). you're beautiful (2009). falling for innocence (2015). 
Rooftop Prince
Cruel City
Fated to Love You
Defendant
Romantic Doctor, Teacher Kim
City Hunter
King2Hearts
Healer