The standard 'cute romance' drama. South Korea is known for producing 'cute fluffy romances'. Best mistake is a standard example of that. So just open your heart and don't try to put your mind into use.

Plot:
A common high school love between a sweet and honest girl, and a slightly bad boy. Well, the boy already transformed into a good, hardworking guy in Season 1. So you can see their cute romance from the very first episode of season 2 itself. The attraction of the show was definitely the romance between our leads. This season progressed to show a break up between them due to the schemes of another girl. Again, only invest your heart in the show, not your mind. Don't try to rationalise their situation. Just go with the flow. Later on they reunite, as expected.

Acting: The acting was fluctuating between Ok and good. But still, I love the cast. They all suited to their characters. Eun Jae (Yeon Doo) and Yul (Hyun ho) looked great together. Hyun ho had the most character development in the entire 2 seasons. I loved his lovestruck and devoted expressions for Yeon Doo. All the supporting casts were also good.

You can give it a go when you are free. It doesn't have much to offer but it will make your heart flutter. Actually this was what the drama intends to do. So, Go for IT!!!