I nearly dropped this drama (and I really didn't want to review because I didn't want to waste my time) because of a mediocre female lead. However, the acting, the characters and the humour in this changed my mind. Plus I get a chance to complain about the female lead. First, Seo In Gak was awesome. His acting is excellent, never lagged and you believed him in any role he played in this drama. He is 100% believable. His co-star Lee Soo Hyuk was just as excellent despite his less screen time. The relationships in this drama is awesome too. It was worth it to watch the characters, the families, the friendship building. I confess, I ship the friendship between SIG and LSH more than anything in this drama. Put the two of them together and I would watch even the most boring of dramas. My evidence is that Lee Soo Hyuk carried me through 20 episodes of the most boring drama Scholar Who Walks the Night. I loved everything, the storyline the characteriztion of the two male leads. The supporting casts and their relationships were wonderfully done too. You really believe he's a hih school kid and he's treated as such by the people closest to him. His friends were the icing on the cake. Now for the other lead.... I like a quirky female lead as much as anyone else but this one got on my nerves. I contemplated dropping this drama just because she was an eyesore and her character was not up my alley, but I kept at it just for the 2 male leads. Jung Soo Young needed a makeover so bad, I hated her. She was too untidy and too much of an ahjumma. If she was at least 5% sexy (like I Hear Your Voice which is plenty sexy) I'd have gone along with it. But I watched on viki and she was so troubling that I had to stop every 5 minutes to complain over her mess. I really hated how she looked and by extension, her character. The actress played the character like she had autism - which makes it worse when compared to Joo Won's "Good Doctor". The thought that the real actress was pretty and neat didn't even console me. Plus, put her up against the handsome high school boy and she looks to old to be kissing him or holding his hand. I hated her and her stylist and really really wanted to drop the drama because of her. I am not the only on either. She makes it hard to watch. Her character is too old physically and too stunted mentally for me to justify the romance. The 2 male leads had better chemistry together. Will definitely not rewatch because off the eyesore. I wouldn't really recommend it to anybody because I don't want to inflict that female lead on any one.