Son-In-Law of the God of Killing

A generational killing god, the leader of the world's most mysterious "Twelve Zodiac" organizations. No one knows his name. His codename is 'Dragon'! He completed his last mission and returned to the city, and later became his son-in-law willingly. Do you think your son-in-law will suffer all kinds of humiliation when you visit him? You are wrong. After he became a live-in son-in-law, his wife loved him, his sister-in-law was obedient, and his mother-in-law loved him. The family lived a simple, ordinary, and happy life. Until one day...