Sunoo is the son of a rich family, but no one knows this because he hides it. He's known in school as a stupid and weak nerd, he's an easy victim for all bullies, as he's always bullied and mocked.

Meanwhile, you're a tomboy. A girl who looks for trouble and doesn't care about anything. This is because you live among three older brothers, Sunghoon, Jongseong and Jaeyun.

｡⁠ﾟ⁠+｡♡-----------------------------------✧⁠⁠。

One day, you went to the rooftop of the school to smoke during lunchtime, only to see Sunoo laying there on the floor, bleeding, supporting himself up with his elbow, and there were three guys surrounding him, all laughing at him, making fun of him, and bullying him.