Niko's mother is a deceased character whose presence is felt primarily through the memories and motivations of her daughter, Niko, in the Cells at Work! film. She passed away due to illness when Niko was younger, a loss that deeply influences Niko's life choices. Her death serves as a key emotional driver for Niko, inspiring her to pursue a medical education and become a doctor. The mother's role in the story is largely posthumous and symbolic: she is remembered as a loving parent who knitted a scarf for Niko while she was in the hospital, a project left unfinished at her death. Niko's father, Shigeru, later completed the scarf, making it a cherished keepsake and a tangible link to the mother's care. Beyond these details, the character's personality, personal motivations, individual development, or any notable abilities are not depicted in the available material. Her key relationship is with Niko, as her memory shapes the family's emotional narrative and Niko's ambition, and she is also part of the backstory that explains Shigeru's efforts to fund Niko's education.