I'm not gonna say much. Just watch it pls because it has everything you need. except for romance but it has love. You can feel the love between both the main leads not in a romantic way but pure. I always watched kdramas because of the romance but i never knew I could watch such a mature series and still love it. Just watch this drama you wont regret it. At first you may feel its going to slow. But eventually youll love it. Thats what it is for me. And as far as IU all i have to say is damnnnnn. I always thought why do ppl hype her but guess what she deserves all the hype. she served in this series.