that depends on what you're in the mood for! if you want a fun, heart-warming romance, watch romance is a bonus book; if you want a drama to rip your heart out but in a way that you'll be grateful for, and you like historical dramas, watch my country: the new age; if you want something gritty and don't mind a high school setting, watch weak hero class 1 (and 2); if you like medical dramas, watch doctor romantic; if you like zombie apocalypse, watch all of us are dead, happiness or - if you want joseon zombies specifically - kingdom. i'm sure there are some i'm forgetting right now, but these are some kdramas that i would recommend!