you just need to focus while watching this drama. maybe people are a little confused because of the many main characters and many people around the main character, you have to memorize the names of many characters, because this is a drama about medicine, you will also find foreign terms, I think that's why people get confused and unfocused. but once you focus on every scene and read every translation correctly, you will find deep meaning and find extraordinary experiences while watching this drama. especially about their friendship, their friendship was really envious and very meaningful. You will also reminisce when watching this drama. very highly recommended