why do my heart aches, even thou the ending was a happy ending, maybe my heart aches knowing that the series was ending, and I'll be honest. this one was the second but this one was also my all time favorite, even if you compare it to other series, kdrama/anime/short drama/Chinese drama etc. this will still be my number one even thou I kind of hate the first ep everytime I rewatch due to this heart not beating and knowing that the first ep feels suffocating because of how helpless the characters are, from the enemy heroine to the main character, none of them are at fault except for the one who started it all, and schemed it all.