only the classics like nobuta wo produce, 1 litre of tears, hanakimi, hana yori dango/bof, my boss my hero & atashinchi no danshi because these are the gems that got me into dramas so i like to revisit them from time to time.
Not much of a rewatcher also, but I've watched Goblin so many times. I think I've watched every episode a minimum of 3 times. Other than that I've rewatched Nobunaga Concerto and started to but didn't finish rewatching Pinocchio.
I rewatch dramas frequently, this are the ones that i rewatched full and in order, but if i considered the times i watch just random parts the list would be much bigger.
5+ times : Reply 1997 (2012)
2-3 times: Empress Ki (2013) Prime Minister and I (2013) Six Flying Dragons (2015) You Who Came from the Stars (2013) Deep Rooted Tree (2011)
At least 1: Another Miss Oh (2016) Drinking Solo (2016) Itazura na Kiss - Love in Tokyo (2013) Moon Lovers: Scarlet Heart Ryeo (2016) My Wife’s Having an Affair this Week (2016) Secret Garden (2010) The Heirs (2013) The Producers (2015) Uncontrollably Fond (2016) You're Beautiful (2009)
A Love To Kill Another Miss Oh Arang and the Magistrate Boys Over Flowers Chief Kim Cruel City Fated to Love You (Korea) Fated to Love You (Taiwan) Flower Boy Ramen Shop Goblin Goong Healer I Need Romance 3 I Remember You Innocent Man It Started with a Kiss It's Okay, That's Love Kiss Me (Thailand) Kleun Cheewit (Thailand) Kou Kou Kyoushi 2003 Legend of the Blue Sea Lucky Romance Marriage, Not Dating My Girlfriend is a Gumiho Oh My Venus Queen In Hyun's Man Reply 1988 Strong Woman Do Bong Soon The Devil They Kiss Again Tomorrow With You Weightlifting Fairy Kim Bok Joo You Who Came from the Stars