Fang introduces himself as a "foreign exchange student" from the "smith school of medicine" . He tells the master that he admires "fang yuan" , and that he has come to tell him about a "perverted fat guy" who is following him around. He says that the view in the mansion is not so nice anymore, and the "fat guy" is the one following him. He asks if he can help him look after the fat guy, and he says that he will. He also tells him that he needs to ask him a favor, and asks him to take care of lianyu. He then tells him about his childhood, when he lost his way in a forest, and when he was four, he got lost and scared to death. When he got back, he saw that the "weakest gentleman" in front of him was the "son of a god." He asked him to protect him, and for three days he did so. He swore that he was his "closest and dearest family," and from then on, he swore that "junior bro" was his closest and dearest friend. He wants to ask the "master" to be his witness, and wants him to be "my best man," but he is afraid that "deadly sins are forgiven," but living sins "are hard to escape."