I literally never cry during movies and dramas. I never cry, even if the entire theatre is. This drama had me crying in episodes 3, and 6 it was that powerful. I was told this drama is a true tear jerker, and that to proceed with caution. I ended up marathoning it in two days. It's a rather simple story of highschool sweethearts, through their ups, downs, and all sorts of other events, persisting through it all. This drama will have you rooting for people, crying, even hating a few people. It has it all. I didn't like the pacing, it was REALLY fast since it's only 6 episodes. Be prepared for significant, but marked, time skips. And be prepared for about 2-3 drama moments per episode that will have you crying your heart out. I was hesitant to start watching, but I'm so glad I finished it. I will most likely be rewatching in the future with friends, and a tissue box handy.