Kei Nijimura hides her true feelings and acts as an emotionless maid but breaks her facade when confronted about attacking Josuke. She hates the Higashikatas and threatens Josuke not to approach Holy, who is revealed to be her mother. Josuke complies, and Kei recalls their past connection. She is smart enough to notice the physical effects of his memory loss and how he is a fused human. She cares for her mother at the hospital, showing a deep love for her.