Character from dark-forest by
Japanese neuroscientist, Bill Hines's wife and lifelong research partner — secretly the Third Wallbreaker, who finally exposes the Mental Seal's true defeatist payload before taking her own life in the UN meditation room.
Keiko has loved Bill Hines and the Trisolaran cause simultaneously for decades. She believes the only honest future for humanity is acceptance of defeat, and she allows the Mental Seal program to advance because it is the perfect delivery system. When she breaks the wall, she does it in front of cameras at the UN — clinical, exact, no theatrics — and then withdraws to the meditation room and commits seppuku in silence. She does not say goodbye to Hines.
A small, composed Japanese woman in her fifties, dark hair always pulled back, gray suits or a quiet kimono. Speaks softly, smiles rarely. Holds her husband's hand in public; will not look at him in private once she has decided.
Also known as: 山杉惠子, the Third Wallbreaker