Healer will always be number 1 for me in Kdramas. Watched it very early on in my kdrama journey. Only wish I could watch it for the first time again😒 Like many have said Suspicious Partner, thriller, romance and funny and K2 are both brilliant. Empress Ki, is soooo long but left a big impact on me. Films I'd go for are Fabricated City or Hard Hit, both amazing. And if you want to see another side of Ji Chang Wook try tge reality show Young Actors Retreat, so very funny. You may have to search around for these🙂
-Susan