Sis, he really is your husband Ⅰ

After an accident, Grace’s younger brother claims to be a time traveler and shocks everyone by calling her cold, powerful boss Phoenix his “brother-in-law.” The next day, Phoenix offers Grace five million dollars for a contract marriage. As they begin living together, Grace discovers that he remembers every little thing she loves and has quietly reshaped his life around her. The truth finally emerges: Phoenix has loved her since their first meeting in college and waited seven years for her to notice him. What began as a business deal becomes the love story he had been waiting for all along.