Ai was born as the daughter of a ryotei (a high-class Japanese restaurant). Her mother, Rie, managed to turn around the failing ryotei that had been in the red for a long time. Whether it was because he didn't like this, or not, her father began to raise his hand against his children and his drinking habits worsened. Although Ai has a bad relationship with her father, she loves her mother very much. Even after moving to the city for school, Ai and Rie continued to stay at inns, nurturing a love that transcended family affection.
