Dark Side of Chay

What if Kim breaking up with Chay caused a drastic change in Chay?

Follow the journey of Chay who decides being good is no longer a good thing as being good only causes pain. Follow how he gets revenge on the one who hurt him. His feelings for Kim have turned from Love to Hate. What happens when they meet a couple years after the breakup. Will Kim be able to change Chay back to the person he fell in love with or will Kim be the one begging....