Wu Suowei has three rules, Never lose a fight, Never fall for the enemy, Never let Chi Cheng ruin his day. Too bad he breaks all three..before lunch. Chi Cheng is the definition of annoying: rich, arrogant, and infuriatingly hot. He's made it his life's mission to get under Wu Suowei's skin... and maybe under his clothes too, if Suowei's not careful. But when a mysterious new boy starts showing interest in Suowei, Chi Cheng's attitude shifts. His taunts turn territorial. His insults get personal. And Suowei can't tell if they're still enemies...or something worse. Caught between spite, sarcasm, and a dangerously growing obsession, Wu Suowei is about to learn that revenge isn't always cold... sometimes it burns.

Twins separated at birth, Haneul and Jihye grow up and study in the same school, fall for the same guy but he falls in love with Jihye and Haneul craves for that love. What happens when Haneul decides to murder her own sister out of jealousy and lives her life? Read more to find out.