God-Level Son-In-Law

The door-to-door son-in-law Lin Yi is a man who is despised by his cold wife, ridiculed by his mother-in-law, and called a waste by the world! But who would have thought that such a useless man would be the world's top killer known as the Butcher, and a peerless doctor known as the left hand of God! All this has become a memory, but dangers are coming one after another. In order to protect the people around him, he can only stand up and be the giant who blocks all dangers!