Aloof Junior, Be Good.

Seven years ago, Su Jin was cold-hearted, unruly, smoking and drinking. She is a bad girl who is disobedient to discipline by her parents. She is a cold and ruthless flower on the high mountain in the eyes of her classmates. Until I met the clean and bright Cheng Yi, She was moved and quit drinking and smoking. She is a person who never likes to give up halfway. But Cheng Yi felt embarrassed for the first time. So she gave up and never came back. I met my old friend again seven years later. The boy who was once as clean as snow has become a night spirit sitting on the side of the bar, puffing smoke rings and never getting drunk after a thousand drinks. After many years of separation, I finally live like you.