This is a drama that had me grinning often. I warn you, it isn't all happy go lucky, all characters have gone through traumatic events and the story can feel heavy at times, but the human interactions are very heart warming. It is a journey of healing and acceptance, about fighting and forgiving. Most characters succeed, others are too rotten to do so.

Our main character, Boksoo (which literally means revenge) is played by Yoo Seungho who completely kills it. He makes Boksoo so likeable and multi-dimensional that you don't wonder why people around him are so attracted to him, you will soon be one of them! One thing I always enjoy about Yoo Seungho is how much emotion he pours through his eyes, whether it is pain for the wrongs and betrayals in his past, or love and devotion towards Soojung, he is just perfect.

The female lead, Soojung does a very good job also. It is my first drama seeing this actress and I look forward watching more of her in the future. Like Boksoo, she also has to portray an array of emotions and both leads felt so organic and bounced off each other perfectly.

Although this is a story about revenge and righting wrongs, the love story is at the front all the time. When most other dramas throw one or two scenes of the leads being intimate and then move on to other plots, here you will get continuous attention to their romance and transformation. Also I love how once passed their initial misunderstanding, they have complete faith in each other and no minor character can put them apart. You can anticipate lots of forbidden love scenes in school which will make your heart flutter, without the guilt of a real teacher-student relationship (come on, they were high school sweethearts). One of my favourites will have to be the kiss behind the classroom door ;P

At the end of episode one I kind of laughed at Boksoo coming back to school for revenge, thinking it didn't quite make sense, but later Boksoo himself is lost and wondering how exactly he will manage. That made me buy into the plot a bit more.

The drama also deals with bullying, underage working conditions, absent parents, and many issues that young viewers will appreciate, yet it is also appealing to older audiences as the leads are in their late 20s. I found Boksoo's classmates surprisingly charming, and found myself caring for them. Even the kids from the Ivy class ended up becoming just victims of the system and finding some redemption. Boksoo's former homeroom teacher played by Chun Hojin was so likeable he almost stole the show. As for Oh Seho, the betrayer, his redeeming act came a little too late, and I am glad that they didn't try to make him be good friends with Boksoo again, it would have felt too forced and honestly unpleasant. The problem with Oh Seho is that he only decided to help Boksoo when his mother completely abandoned him, which makes one wonder, if he had still had some options left, would he have tried to amend anything? It was literally like, one day he gives the order to transfer the kids, the next his mother tries to make him take all the blame so he turns on her.

Kudos to Kwang Dongyeon though, Oh seho was great. I'm also looking forward seeing him in more dramas!

Lastly, I want to add that this drama is very beautifully shot. Korean dramas are raising the bar recently but his one tries its best to have nice visuals from beginning till end.

All in all, I highly recommend this show!