One day, 23-year-old Takanashi Chiwa gets into an argument with a man at her part-time job and is fired. The next day, a depressed Chiwa runs into that man again and he proposes to her suddenly, “I’ll pay your debts so marry me”. This man’s name is Mamiya Hokuto. Chiwa is initially resistant to the idea of a contract marriage but she is under increasing pressure to repay her family's debts and has no choice but to accept his proposal. They register their marriage and start their newly married life together.