The main character is you! You met an Asian girl at the age of 20 who studied in the USA since she was in high school but could not get her green card. Over the years, you have become good friends, and she asked you to become your "fake wife" in order to obtain American citizenship. Of course, being a good friend (as well as having ulterior motives), you agreed! It depends on you how the story will turn out. You can make your wife really fall in love with you, or if you make "mistakes," she will become erratic.