This is the most I've ever cried while watching a show. The storyline is heart-wrenching but realistic. Second-lead syndrome is definitely real in this. I've only ever seen people talking about Nam-Gil and Jin-Joo but I'd like to point a spotlight at Seo-Young and Ban-Do. I think they had a lot of chemistry, and I felt bad for her and Nam-Gil as you knew that Jin-Joo and Ban-Do clearly still love each other. Scenes including Jin-Joo and her mother are especially heartbreaking. Oh and be sure to have a whole box of Kleenex on you for that last episode.