i really cried for the movie "The Throne" with Yoo Ah In, is a wonderful movie! The acting was just perfect and in point, they really made me love the Sado Prince, for no reason at all (maybe pity).
Another one was Uncontrallably Fond, of those I remember... The ending was really sad, because in dramas, the protagonist rarely dies, and when he dies, the drama becomes more realistic. I think the tragedy gender is my style.
And the last, of those I remember, is Hwarang and Scarlet Heart Ryeo, when taehyung and IU died
(i think it's because i'm a fan of V, but also the fact that his brother "killed" him made me really sad)
(the scene when ji soo cries all his heart for her, he's a lovely guy).