They had been happy since childhood, but when that day came, it was like a nightmare, and they lost the person they loved most in an instant. In order to take revenge, after years of arduous training, he finally developed his own skills. On the road of seeking revenge, they also met the most trustworthy person in their lives. However, love is not so smooth. No matter how perfect love is, there will always be some suffering. So, can they stay with each other until the end?