Osawa Akari, who was all alone in the world, finally found peace. It was when she met her husband, Tatsuya. The two became husband and wife and lived a modest life, but one day misfortune struck when Tatsuya collapsed from a subarachnoid hemorrhage. At a loss, Akari made a decision... It was to go to her father-in-law, Shuichi, with whom she had parted ways. Akari reluctantly asked for medical expenses, but what was the condition Shuichi set for her?