Aoi Kashima is an adult woman with shoulder-length brown hair and blue eyes, possessing a curvaceous figure. She is the biological mother of Yuji and Yuri, living with them as a dedicated housewife solely responsible for managing the household and caring for her family. Her personality is kind, gentle, and deeply caring towards her children, maintaining well-mannered behavior and prioritizing their welfare above all else. Following the birth of Yuji, her husband lost interest in her; his current fate is unknown. She continues to reside solely with Yuji and Yuri, raising them without spousal support.