Katsue Tadokoro is the mother of Mitsuo. She volunteers at her son's workplace.
As the villagers started dying off, her son asked Miwako Muroi if they could live with her. She agreed and said she would be happy to have them. She agreed that they had been feeling a little depressed for a while. Mitsuo promised to protect her and her family.
When the already volatile villagers broke into the temple, searching for Muroi, she was killed along with her son and Miwako out of rage.