Sachiko Fujinuma

Sachiko is a kind, caring and devoted mother who goes to great lengths to care for Satoru Fujinuma (Sachiko's son). She's described as a strong and willful person as she has dealt with various problems while striving for a better life. At times, she feels she doesn't fully understand Satoru, but never stops caring for him. Satoru refers to her as a demon due to her ability to read his thoughts, something he finds frightening though he deeply cares for her. She tends to keep things to herself in order not to worry others, especially her son. Sachiko's observant nature and instinctive ability to understand people and their motives combined with some decent detective sleuthing skills seem to come from her former job as a news anchor. She tend to pry into Satoru's personal affairs, such as his love life, much to his embarrassment. She is nosy, sometimes lacks delicacy and tends to do as she pleases. After Satoru fell into a coma, she took care of him everyday for the next 14 years. Kayo Hinazuki, who spent a great deal of time helping her out, developed a strong relationship and saw her as the mother she never had.

Sachiko is a beautiful and slim middle-aged woman with chin-length dark blue hair, dark blue eyes and pronounced lips. In her youth, she once had long hair (possibly upper-back length) that was tied in a low ponytail. Satoru Fujinuma notes that she looks remarkably young for her age.