Kai feels a thousands of regrets!He often ask himself,why did he let her go in the first place?Why was he too selfish?He never thought he would suffer this much after that dreadful day.The day when he dump that innocent girl.The girl that actually meant alot for him.But,no.He never really appreciate her feeling.How much that he wish to turn back the time.To love her with whole his heart.But,that if he have the time machine.