2521 I always doubt to watch it when I was at my fresh teenaged years. But now when I looked into it, this show perfectly curved the realistic world. Even with mom-daughter bond, father - daughter bond, academic and long distance relationship, understanding and friendship.
Whenever there's a seen about Na Hee-do's mom and Na Hee-do, I end up with tears. But when it comes to Yu-rim's parents I feel so warm in inside. I guess writer and director play there role really well.
When it comes to the friends group it's so realistic. They grew up as one when they are in their teenage years but later they can't keep in touch and once Seung-Wan said "we can only meetup like this after someone pass away. And that thing is so real. Because it's happen in real life.
So, if you want to learn realistic world and give away your sadness then you must watch it. IT'S REALLY WORTH WATCHING!!! And it's have super funny scenes too.