The drama didn't do a good job to make me care about any of the characters, the first 4 episodes were part of the reason as well. The writer was confused to have it romantic or keep the serious tone, the mix only brought the drama down even further. The episodes leading up to the end were weak so they had to come up with whatever climax they could think of (start of ep19) which resulted in the ending missing the landing by a long shot, they shifted the mood towards tragedy with barely any buildup. Can't recommend!