IOTNBO will be one of the most well-made kdramas of all time.. from acting to cast to the direction and story everything was very detailed..
this drama put forward the hidden talent that is seo yeji.. she looks very petite but comes off very powerful as ko moon young.. she is now one of my favourites.. after her i liked oh jung se as moon sang-tae.. he had the best and most natural character development out of the 3 main characters and the actor did an amazing job.. kim soo hyun was also good as moon gang-tae and i loved his chemistry with seoyeji.. the trio hand great chemistry together and their combination scenes were a treat to watch..

what i liked about the drama-
1. SEO YE JI as KO MOON YOUNG. no matter how much i say it wont be enough to describe how amazing she was in this drama.. i love her voice and smile..
2. THE TRIO
3. LEE SANGIN AND JAESOO. they stayed with MY and GT without expecting anything back.. the best human beings out there..
4. DIRECTION, STORY, CINEMATOGRAPHY
5. THE FAIRY TALES. i loved how they narate an episode or the inner torment of a character through a fairy tale. it was unique.
6. ALMOST EVERYTHING ABOUT THE DRAMA.
7. CHILD ACTORS. THEY WERE ALSO GOOD. the actress playing young MY is very pretty..
8. LAST EPISODE. all's well that ends well. this drama has one of the best ending.. not rushed at all and every character had closure.

what i dilike about the drama
1. THE MYSTERY AND REVELATION OF THE MOTHER.. this almost destroyed everything good about the show.. this was so flawed that it overshadowed some good scenes in episodes that gave importance to the mother and her mystery. due to some episodes trying to create the mystery i couldn't enjoy good scenes. my mind got occupied with the mystery.
there is no proper explanation on how the mother survived or how exactly she managed to fake a normal life for almost 20 years.. she is too creepy and psychotic to act normal for 20 years and fool and manipulate everyone around her including experienced doctors.. this is the reason why the show couldn't be a 10 on 10..
2. somewhere in the middle nothing major happens in the show and the character growth also gets stagnant but thats just for a short period.
3. sometimes i couldn't understand the emotions of the characters and got distracted by the extravagant set and camera work and wardrobes..

the last episode was so satisfying that at the end we dont remember the flaws of the drama and only the good things stay with us.