The part I like most is when Won Bin "Tae Sek" told Song Hae Gyo "Yan Hei" what are the reason she still living(when she had the cancer and they were in the hospital garden) he said sea and bla bla bla... and Song Hae Gyo "Yan Hei" added That I live also for "Tae Sek" Won Bin !!! it was so sad and touching !!!
also the part when "Tae Sek" won Bin found out Song Hae Gyo "Yan hei" had the cancer, they were hugging each other by the ocean with the nice sunset it was soooo nice and lovely !!!
and about main actor Song Seung Hun not much scene about him, he doesnt speak much, he seem always down and unhappy, he shouldnt deserve to have the main actor.. I don't know but this is my opinion... no offense