hmm any specific genre? Anyway i'd just list whatever series/movies that have made me cry:
Movies:
- Wedding dress (my favorite! mother-daughter relationship)
- Werewolf Boy (romance, fantasy)
- Miracle of cell no. 7 (father-daughter relationship)
- Sunny (friendship, youth, a lil bit comedy)
As for drama i think i've never watched a pure sad series, so i dont think i can help you on that one. Hope it helps btw! :3