Characters:Park Serae16 years old,high school student ,very beautiful, smart,hard worker. Park Serae is a innocent,lovely,pure girl,but she is also stuborn and with a bit of a short temper. She lives with her grandmother because her parents died in a car accident when she was 10 years old. Her mother was a famous doctor and her father a famous architect,they were rich so when they died they left her a lot of money. She is attending SM high school,one of the most prestigious schools from South Korea. She entered that high school based on a scholarship so everyone thought that she is poor.     Xi Luhan 17 years old,high school student at SM high school, beautiful, arrogant, smart, very rich, coming from one of the most influential families in South Korea, heir of Xi Empire. Coming from chinese descendants, his grandfather is a mogul in China,controlling the financial market even in South Korea.  Luhan  was the kind of person who doesnt trust people around him,thinking they all want his money. He thinks that girls are just for fun,and he is only using them for his needs and even paying them. He has 11 friends since he was 5 years old,all of them coming from rich and powerful families. They were like his family because he was spending a lot of time with them. Exo M & Exo K  ForewordShes the nerd,hes the popular guy, shes the sweet innocent and gullible girl, hes the player with an ice heart...Hes everything to her,shes just a bet for him...thats just before he knows her "theres no need for apologies,the damage has been done, just wait for the day you will feel the same pain...  Before you embark  on a journey of revenge dig two graves                                                                                                                       one for you...