Mango's Bone

Baek Jooin is a smart, diligent student and has a crush on Ham Sobok, another elite student. However, things start to go downhill when Jooin's twin brother, Jooyul, turns up to meet Sobok while pretending to be Jooin. What's worse, Sobok's best friend, Lisa, doesn't seem to like Jooin one bit. How will it all play out?