The only Korean drama that got a second rating and even wants to get a third rating

This is the only Korean drama I've done second and even want to watch third. Is it because she is pretty? The plot is good?

No! Because I have a bad memory, I have already forgotten the plot, and I am a loyal face dog who can occasionally give up his principles.

The male lead and the female lead are beautiful, my friend recommended it to me At that time, I still disliked it and said: What kind of drama title is this? If it’s so high school, I’m not interested in this name.Then slapped in the face. I also watched it twice, and when I watched it for the first time, I still muttered that there is no normal person in this drama,

The four of them are sitting together, each of them has problems, but Jo In-sung is really handsome, with his height, he is full of aura, and the clothes look good, I remember a picture , I don’t know if it’s this one or another one, the suit with sandals should really be the one I remember the longest.

Maybe everyone has some mental or psychological problems, and the OST is very nice,