The lying game is an american book series and a tv series which I watched a few years back, and I couldn't help but notice the similarity between the lying game and who are you: school 2015. The basic story is so much alike, the difference lies in the culture in which the series airs. While the american culture is more provocative, the korean one is very shy and stayed loyal to the rules that usually applied in the korean series, such as no kisses in high school series.
Even though its prohibit, you can feel the tension build in every episode and its very hard to stop watching.
The chemistry between the main characters is good and its a very hard to guess who she will choose, unfortunately since the two series are very much alike I already knew what will happen in the general story.
OST - I really like the theme song and it will defiantly goes into my playlist.