The Son-in-Law War King

Because his mother was in poor health, Yang Xiu was born frail and weak. At fifteen, his grandfather sent him to an island where international special forces were trained. After five years of training, he received word that his grandfather was critically ill. To fulfill his grandfather’s wish, he became a live-in son-in-law. The Xu family, however, still thought he was the same weak, useless coward from five years ago, incapable of even fighting a chicken...