Due to an unpleasant accident, the two cousin-but-live-together-like-siblings Hanmi and Junhyuk had to transfer to another high school right at the beginning of 2nd term. They childishly agreed to keep their relationship a secret and started a completely new life. Then, Hanmi fell for a puppy face but weird guy named Lee Gun. He had no friends at school but always topped the tests. Hanmi couldn't find a better way to make Gun remember her face and name, so she ran to her secret brother Jun Hyuk and begged him to fake a relationship with her to trigger Gun. Unfortunately, everything didn't go according to her plan.And since the siblings are so so popular at school, their fake relationship became the topic of every gossip and rumor.

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Spoiler alert.
In the long run, Hanmi approached Gun. However, a handsome guy named Yeong Hwa got in the way. He is a psycho and willing to to everything to get Hanmi back to him, including destroying all the people she loves. Seong Hwa forced the choice on Hanmi. Will she choose Gun, Seong Hwa or her secret brother Jun Hyuk?

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Overall, I like everything about this stories. Nice art, addictive plot, impressive character buildings and funny scenes at the same times. But there's one thing I don't like is that the story develops way too long, therefore it's too easy to forget some important details.